Use Frozen Green Beans for Convenience

Green Bean Casserole is a classic comfort dish often enjoyed during holiday dinners, featuring tender green beans mixed with a creamy sauce and topped with crispy fried onions. Using frozen green beans in this Instant Pot version not only saves time but also ensures that you can whip up this delicious dish without any hassle. This method retains the freshness of the green beans while significantly reducing prep time.
| Ingredients | Quantity |
|---|---|
| Frozen green beans | 1 lb (450 g) |
| Cream of mushroom soup | 1 can (10.5 oz) |
| Milk | ½ cup |
| Soy sauce | 1 tbsp |
| Black pepper | ½ tsp |
| Fried onion toppings | 1 cup |
| Shredded cheddar cheese | 1 cup |
Cooking Instructions:
- Add the frozen green beans, cream of mushroom soup, milk, soy sauce, and black pepper to the Instant Pot. Stir to combine.
- Close the lid, set the pressure release valve to sealing, and cook on high pressure for 3 minutes.
- Once cooking is complete, quickly release the pressure and carefully open the lid.
- Stir the mixture well, then top with shredded cheddar cheese and fried onions.
- Use the sauté function for 2-3 minutes until the cheese is melted and everything is heated through, then serve warm.
Skip the Sautéing With Pre-Cooked Ingredients

Green Bean Casserole is a beloved staple, especially during holiday feasts, celebrated for its creamy texture and satisfying crunch from fried onions. By utilizing pre-cooked ingredients, you can streamline the process and further reduce cooking time while still enjoying this classic dish’s rich flavors.
| Ingredients | Quantity |
|---|---|
| Pre-cooked green beans | 1 lb (450 g) |
| Cream of mushroom soup | 1 can (10.5 oz) |
| Milk | ½ cup |
| Soy sauce | 1 tbsp |
| Black pepper | ½ tsp |
| Fried onion toppings | 1 cup |
| Shredded cheddar cheese | 1 cup |
Cooking Instructions:
- Combine pre-cooked green beans, cream of mushroom soup, milk, soy sauce, and black pepper in the Instant Pot. Mix well.
- Close the lid, set the pressure release to sealing, and cook on high pressure for 1 minute to heat through.
- After cooking, quickly release the pressure and carefully open the lid.
- Stir the mixture, then top with shredded cheddar cheese and fried onions.
- Use the sauté function for 2-3 minutes until the cheese is melted and everything is warm before serving.
Swap Cream of Mushroom Soup With Homemade Alternatives

Green Bean Casserole is a classic comfort dish often associated with holiday celebrations, featuring a creamy base and topped with crispy fried onions. For a healthier twist, you can swap out the canned cream of mushroom soup for a simple homemade alternative, enhancing its flavor and freshness, while still keeping the dish quick and easy with an Instant Pot.
| Ingredients | Quantity |
|---|---|
| Fresh green beans | 1 lb (450 g) |
| Mushrooms | 1 cup, diced |
| Heavy cream | ½ cup |
| Milk | ½ cup |
| Soy sauce | 1 tbsp |
| Garlic | 1 clove, minced |
| Onion | 1 small, diced |
| Black pepper | ½ tsp |
| Fried onion toppings | 1 cup |
| Shredded cheddar cheese | 1 cup |
Cooking Instructions:
- In the Instant Pot, sauté onions and garlic until softened.
- Add diced mushrooms and cook until tender.
- Stir in fresh green beans, heavy cream, milk, soy sauce, and black pepper; combine well.
- Close the lid, set to sealing, and cook on high pressure for 1 minute.
- Perform a quick release and open the lid, stirring the mixture.
- Top with shredded cheddar cheese and fried onions, then use the sauté function for 2-3 minutes until heated through and cheese is melted before serving.
Incorporate Pre-Chopped Onions and Garlic

Instant Pot Green Bean Casserole is a comforting dish that combines tender green beans, creamy sauce, and crispy toppings, making it a staple for holiday gatherings. By incorporating pre-chopped onions and garlic, you can save time in the kitchen while still enjoying the same delicious flavors. This shortcut makes preparing your casserole faster and hassle-free without sacrificing taste.
| Ingredients | Quantity |
|---|---|
| Fresh green beans | 1 lb (450 g) |
| Pre-chopped onions | 1 cup |
| Pre-chopped garlic | 1 clove |
| Mushrooms | 1 cup, diced |
| Heavy cream | ½ cup |
| Milk | ½ cup |
| Soy sauce | 1 tbsp |
| Black pepper | ½ tsp |
| Fried onion toppings | 1 cup |
| Shredded cheddar cheese | 1 cup |
Cooking Instructions:
- In the Instant Pot, select the sauté function and add pre-chopped onions and garlic; cook until softened.
- Add diced mushrooms and continue cooking until tender.
- Mix in fresh green beans, heavy cream, milk, soy sauce, and black pepper; stir well.
- Close the lid, set to sealing, and cook on high pressure for 1 minute.
- Perform a quick release and open the lid, stirring the mixture.
- Top with shredded cheddar cheese and fried onions, then use the sauté function for 2-3 minutes until heated through and cheese is melted before serving.
Opt for Instant Mashed Potatoes as a Base

Instant Pot Green Bean Casserole with Instant Mashed Potatoes adds a unique twist to the classic dish. By using instant mashed potatoes as a base, you not only save time but also create a creamy layer that complements the green beans and mushroom sauce perfectly. This shortcut is ideal for busy cooks looking to streamline their holiday meal prep without compromising on flavor.
| Ingredients | Quantity |
|---|---|
| Fresh green beans | 1 lb (450 g) |
| Pre-chopped onions | 1 cup |
| Pre-chopped garlic | 1 clove |
| Instant mashed potato flakes | 1 cup |
| Water or broth | 1 cup |
| Heavy cream | ½ cup |
| Soy sauce | 1 tbsp |
| Black pepper | ½ tsp |
| Fried onion toppings | 1 cup |
| Shredded cheddar cheese | 1 cup |
Cooking Instructions:
- In the Instant Pot, select the sauté function and cook the pre-chopped onions and garlic until softened.
- Add fresh green beans, heavy cream, soy sauce, and black pepper; stir to combine.
- In a separate bowl, mix instant mashed potato flakes with water or broth to form a creamy base.
- Layer the mixed green bean mixture over the mashed potatoes in the pot.
- Close the lid, set to sealing, and cook on high pressure for 1 minute.
- Perform a quick release, stir the casserole gently, and top with shredded cheddar cheese and fried onion toppings before using the sauté function for 2-3 minutes to melt the cheese. Serve hot.
Utilize Canned Mushrooms for Quick Flavor

Instant Pot Green Bean Casserole with canned mushrooms is a fantastic shortcut to achieving deep, savory flavors without spending hours preparing ingredients. This version not only simplifies preparation but also ensures a creamy and delicious casserole that’s perfect for any occasion, especially during busy holiday meals.
| Ingredients | Quantity |
|---|---|
| Fresh green beans | 1 lb (450 g) |
| Canned mushrooms | 2 cans (14 oz each) |
| Pre-chopped onions | 1 cup |
| Pre-chopped garlic | 1 clove |
| Instant mashed potato flakes | 1 cup |
| Water or broth | 1 cup |
| Heavy cream | ½ cup |
| Soy sauce | 1 tbsp |
| Black pepper | ½ tsp |
| Fried onion toppings | 1 cup |
| Shredded cheddar cheese | 1 cup |
Cooking Instructions:
- Use the Instant Pot’s sauté function to cook the pre-chopped onions and garlic until softened.
- Add the fresh green beans and drained canned mushrooms, then mix in the heavy cream, soy sauce, and black pepper.
- In a separate bowl, prepare instant mashed potato flakes with water or broth to create a creamy base.
- Layer the green bean and mushroom mixture over the mashed potatoes in the pot.
- Seal the lid, set to sealing, and cook on high pressure for 1 minute.
- Perform a quick release, gently stir the casserole, then top with shredded cheddar cheese and fried onion toppings. Use the sauté function for 2-3 minutes to melt the cheese. Serve hot.
Choose Ready-Made Crispy Fried Onions

Instant Pot Green Bean Casserole with Ready-Made Crispy Fried Onions is a quick and easy take on the classic dish, perfect for holiday gatherings or family dinners. Utilizing store-bought crispy fried onions not only saves time but also adds a satisfying crunch to the casserole, complementing the creamy green bean and mushroom mixture.
| Ingredients | Quantity |
|---|---|
| Fresh green beans | 1 lb (450 g) |
| Canned mushrooms | 2 cans (14 oz each) |
| Pre-chopped onions | 1 cup |
| Pre-chopped garlic | 1 clove |
| Instant mashed potato flakes | 1 cup |
| Water or broth | 1 cup |
| Heavy cream | ½ cup |
| Soy sauce | 1 tbsp |
| Black pepper | ½ tsp |
| Ready-made crispy fried onions | 1 cup |
| Shredded cheddar cheese | 1 cup |
Cooking Instructions:
- Use the Instant Pot’s sauté function to cook the pre-chopped onions and garlic until softened.
- Add the fresh green beans and drained canned mushrooms, then mix in the heavy cream, soy sauce, and black pepper.
- In a separate bowl, prepare instant mashed potato flakes with water or broth to create a creamy base.
- Layer the green bean and mushroom mixture over the mashed potatoes in the pot.
- Seal the lid, set to sealing, and cook on high pressure for 1 minute.
- Perform a quick release, gently stir the casserole, then top with shredded cheddar cheese and crispy fried onions. Use the sauté function for 2-3 minutes to melt the cheese. Serve hot.
Experiment With Flavorful Broths Instead of Water

Instant Pot Green Bean Casserole with flavorful broths instead of water elevates this classic dish by adding depth and richness to the creamy green bean and mushroom mixture. Using a well-seasoned broth, such as chicken or vegetable, enhances the overall taste profile, making it a delicious side dish for any occasion.
| Ingredients | Quantity |
|---|---|
| Fresh green beans | 1 lb (450 g) |
| Canned mushrooms | 2 cans (14 oz each) |
| Pre-chopped onions | 1 cup |
| Pre-chopped garlic | 1 clove |
| Instant mashed potato flakes | 1 cup |
| Chicken or vegetable broth | 1 cup |
| Heavy cream | ½ cup |
| Soy sauce | 1 tbsp |
| Black pepper | ½ tsp |
| Ready-made crispy fried onions | 1 cup |
| Shredded cheddar cheese | 1 cup |
Cooking Instructions:
- Utilize the Instant Pot’s sauté function to cook the pre-chopped onions and garlic until softened.
- Add the fresh green beans and drained canned mushrooms, then mix in the heavy cream, soy sauce, and black pepper.
- In a separate bowl, prepare instant mashed potato flakes using the chicken or vegetable broth for added flavor.
- Layer the green bean and mushroom mixture over the mashed potatoes in the pot.
- Seal the lid, set to sealing, and cook on high pressure for 1 minute.
- Perform a quick release, gently stir the casserole, then top with shredded cheddar cheese and crispy fried onions. Use the sauté function for 2-3 minutes to melt the cheese. Serve hot.
Use Dairy Alternatives for a Lighter Dish

Instant Pot Green Bean Casserole is a festive comfort dish that can be made lighter by incorporating dairy alternatives. This version uses plant-based options, providing a creamy texture while reducing calories and lactose for those who are looking for a healthier alternative.
| Ingredients | Quantity |
|---|---|
| Fresh green beans | 1 lb (450 g) |
| Canned mushrooms | 2 cans (14 oz each) |
| Pre-chopped onions | 1 cup |
| Pre-chopped garlic | 1 clove |
| Instant mashed potato flakes | 1 cup |
| Vegetable broth | 1 cup |
| Unsweetened almond milk | ½ cup |
| Soy sauce | 1 tbsp |
| Black pepper | ½ tsp |
| Ready-made crispy fried onions | 1 cup |
| Dairy-free shredded cheese | 1 cup |
Cooking Instructions:
- Use the Instant Pot’s sauté function to cook the pre-chopped onions and garlic until softened.
- Add the fresh green beans and drained canned mushrooms, then mix in the unsweetened almond milk, soy sauce, and black pepper.
- In a separate bowl, prepare instant mashed potato flakes using the vegetable broth.
- Layer the green bean and mushroom mixture over the mashed potatoes in the pot.
- Seal the lid, set to sealing, and cook on high pressure for 1 minute.
- Perform a quick release, gently stir the casserole, then top with dairy-free shredded cheese and crispy fried onions. Use the sauté function for 2-3 minutes to melt the cheese. Serve hot.
Add Pre-Seasoned Protein for Extra Depth

Instant Pot Green Bean Casserole with added pre-seasoned protein is a sumptuous dish that not only elevates the classic flavor of this comfort food but also adds a hearty element to it. By including a protein like pre-cooked chicken or plant-based alternatives, you enhance the nutritional profile while retaining the creamy and savory essence of the casserole, making it perfect for gatherings or holiday feasts.
| Ingredients | Quantity |
|---|---|
| Fresh green beans | 1 lb (450 g) |
| Canned mushrooms | 2 cans (14 oz each) |
| Pre-chopped onions | 1 cup |
| Pre-chopped garlic | 1 clove |
| Instant mashed potato flakes | 1 cup |
| Vegetable broth | 1 cup |
| Unsweetened almond milk | ½ cup |
| Soy sauce | 1 tbsp |
| Black pepper | ½ tsp |
| Pre-seasoned cooked chicken, diced | 2 cups |
| Ready-made crispy fried onions | 1 cup |
| Dairy-free shredded cheese | 1 cup |
Cooking Instructions:
- Use the Instant Pot’s sauté function to cook the pre-chopped onions and garlic until softened.
- Add the fresh green beans, drained canned mushrooms, and pre-seasoned cooked chicken, followed by the unsweetened almond milk, soy sauce, and black pepper.
- In a separate bowl, combine instant mashed potato flakes with vegetable broth according to package instructions.
- Layer the green bean, mushroom, and chicken mixture over the prepared mashed potatoes in the pot.
- Seal the lid, set to sealing, and cook on high pressure for 1 minute.
- Perform a quick release, gently stir the casserole, then top with dairy-free shredded cheese and crispy fried onions. Use the sauté function for 2-3 minutes to melt the cheese. Serve hot.
Incorporate Seasoned Breadcrumbs for Crunch

Incorporating seasoned breadcrumbs into your Instant Pot Green Bean Casserole adds a delightful crunch that perfectly contrasts the creamy texture of the casserole. This approach not only enhances the dish’s flavor but also brings a satisfying crunch to each bite, making it an ideal twist on the classic recipe that is sure to impress your guests during holiday gatherings or regular family dinners.
| Ingredients | Quantity |
|---|---|
| Fresh green beans | 1 lb (450 g) |
| Canned mushrooms | 2 cans (14 oz each) |
| Pre-chopped onions | 1 cup |
| Pre-chopped garlic | 1 clove |
| Instant mashed potato flakes | 1 cup |
| Vegetable broth | 1 cup |
| Unsweetened almond milk | ½ cup |
| Soy sauce | 1 tbsp |
| Black pepper | ½ tsp |
| Seasoned breadcrumbs | 1 cup |
| Ready-made crispy fried onions | 1 cup |
| Dairy-free shredded cheese | 1 cup |
Cooking Instructions:
- Use the Instant Pot’s sauté function to cook the onions and garlic until softened.
- Add the fresh green beans, drained canned mushrooms, unsweetened almond milk, soy sauce, black pepper, and mix well.
- In a separate bowl, prepare the instant mashed potato flakes with vegetable broth according to package instructions.
- Layer the green bean mixture over the prepared mashed potatoes in the pot, then top with seasoned breadcrumbs.
- Seal the lid, set to sealing, and cook on high pressure for 1 minute.
- Perform a quick release, gently stir the casserole, then top with dairy-free shredded cheese and crispy fried onions. Use the sauté function for 2-3 minutes to melt the cheese. Serve hot.
Use a Pressure Cooker Lid for Faster Cooking

The Instant Pot Green Bean Casserole becomes even more efficient when you utilize a pressure cooker lid. This method significantly reduces cooking time while maintaining the flavors and textures of the dish. It allows for the green beans to cook perfectly tender alongside the creamy filling, ensuring that you can whip up this classic comfort food in no time, making it an excellent choice for busy weeknight dinners or spontaneous gatherings.
| Ingredients | Quantity |
|---|---|
| Fresh green beans | 1 lb (450 g) |
| Canned mushrooms | 2 cans (14 oz each) |
| Pre-chopped onions | 1 cup |
| Pre-chopped garlic | 1 clove |
| Instant mashed potato flakes | 1 cup |
| Vegetable broth | 1 cup |
| Unsweetened almond milk | ½ cup |
| Soy sauce | 1 tbsp |
| Black pepper | ½ tsp |
| Seasoned breadcrumbs | 1 cup |
| Ready-made crispy fried onions | 1 cup |
| Dairy-free shredded cheese | 1 cup |
Cooking Instructions:
- Begin by sautéing the onions and garlic in the Instant Pot until they’re softened.
- Add fresh green beans, drained canned mushrooms, unsweetened almond milk, soy sauce, and black pepper to the pot, mixing well.
- In a separate bowl, combine the instant mashed potato flakes with vegetable broth as instructed on the package.
- Place the green bean mixture over the prepared mashed potatoes in the pot, then sprinkle seasoned breadcrumbs on top.
- Close the lid, set to sealing, and cook on high pressure for 1 minute.
- After cooking, perform a quick release, stir the casserole gently, then add dairy-free shredded cheese and top with crispy fried onions. Use the sauté function for 2-3 minutes to melt the cheese. Serve hot.
Mix in Pre-Packaged Cheese Blends

The Instant Pot Green Bean Casserole can be easily elevated by mixing in pre-packaged cheese blends, which add a delightful creaminess and flavor without the hassle of shredding cheese yourself. This shortcut not only saves time but also helps to create a rich and delicious variation of the classic dish, perfect for any gathering or family dinner.
| Ingredients | Quantity |
|---|---|
| Fresh green beans | 1 lb (450 g) |
| Canned mushrooms | 2 cans (14 oz each) |
| Pre-chopped onions | 1 cup |
| Pre-chopped garlic | 1 clove |
| Instant mashed potato flakes | 1 cup |
| Vegetable broth | 1 cup |
| Unsweetened almond milk | ½ cup |
| Soy sauce | 1 tbsp |
| Black pepper | ½ tsp |
| Pre-packaged cheese blend | 1 cup |
| Seasoned breadcrumbs | 1 cup |
| Ready-made crispy fried onions | 1 cup |
Cooking Instructions:
- Sauté the onions and garlic in the Instant Pot until softened.
- Add green beans, drained mushrooms, almond milk, soy sauce, and black pepper; mix well.
- Combine instant mashed potato flakes with vegetable broth as per package instructions.
- Layer the green bean mixture over the prepared potato flakes in the pot, then sprinkle the pre-packaged cheese blend and seasoned breadcrumbs on top.
- Close the lid, set to sealing, and cook on high pressure for 1 minute.
- Perform a quick release, stir gently, and top with crispy fried onions. Use the sauté function for 2-3 minutes to melt the cheese blend. Serve hot.
Embrace Quick Cooking Methods for Corn

The Instant Pot Green Bean Casserole is a comforting and classic holiday side dish that can be enhanced by embracing quick cooking methods, particularly for the corn component. By using frozen or canned corn, you ensure you cut down on preparation time while still enjoying the sweet and delicious flavors in your casserole. This approach allows you to create a harmonious blend of flavors and textures in no time.
| Ingredients | Quantity |
|---|---|
| Fresh green beans | 1 lb (450 g) |
| Canned mushrooms | 2 cans (14 oz each) |
| Pre-chopped onions | 1 cup |
| Pre-chopped garlic | 1 clove |
| Instant mashed potato flakes | 1 cup |
| Vegetable broth | 1 cup |
| Unsweetened almond milk | ½ cup |
| Soy sauce | 1 tbsp |
| Black pepper | ½ tsp |
| Frozen or canned corn | 1 cup |
| Pre-packaged cheese blend | 1 cup |
| Seasoned breadcrumbs | 1 cup |
| Ready-made crispy fried onions | 1 cup |
Cooking Instructions:
- Sauté the onions and garlic in the Instant Pot until softened.
- Add green beans, drained mushrooms, frozen or canned corn, almond milk, soy sauce, and black pepper; mix well.
- Combine instant mashed potato flakes with vegetable broth as per package instructions.
- Layer the green bean mixture over the prepared potato flakes in the pot, then sprinkle the pre-packaged cheese blend and seasoned breadcrumbs on top.
- Close the lid, set to sealing, and cook on high pressure for 1 minute.
- Perform a quick release, stir gently, and top with crispy fried onions. Use the sauté function for 2-3 minutes to melt the cheese blend. Serve hot.
Garnish With Fresh Herbs for Vibrant Flavor

The Instant Pot Green Bean Casserole is a delectable twist on the classic side dish that can be further elevated with the addition of fresh herbs for a burst of vibrant flavor. Adding herbs like thyme, parsley, or chives not only enhances the taste but also adds a beautiful touch of color to your casserole. This quick and easy recipe will have your holiday table looking and tasting fantastic in no time.
| Ingredients | Quantity |
|---|---|
| Fresh green beans | 1 lb (450 g) |
| Canned mushrooms | 2 cans (14 oz each) |
| Pre-chopped onions | 1 cup |
| Pre-chopped garlic | 1 clove |
| Instant mashed potato flakes | 1 cup |
| Vegetable broth | 1 cup |
| Unsweetened almond milk | ½ cup |
| Soy sauce | 1 tbsp |
| Black pepper | ½ tsp |
| Frozen or canned corn | 1 cup |
| Pre-packaged cheese blend | 1 cup |
| Seasoned breadcrumbs | 1 cup |
| Ready-made crispy fried onions | 1 cup |
| Fresh herbs (thyme, parsley, chives) | ¼ cup finely chopped |
Cooking Instructions:
- Sauté the onions and garlic in the Instant Pot until softened.
- Add green beans, drained mushrooms, frozen or canned corn, vegetable broth, almond milk, soy sauce, and black pepper; mix well.
- Combine instant mashed potato flakes with vegetable broth as per package instructions, then layer over the green bean mixture.
- Sprinkle the pre-packaged cheese blend and seasoned breadcrumbs on top.
- Close the lid, set to sealing, and cook on high pressure for 1 minute.
- Perform a quick release, stir gently, and top with crispy fried onions and fresh herbs.
- Use the sauté function for 2-3 minutes to melt the cheese blend. Serve hot.