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Green Bean Casserole with Cream of Mushroom Soup

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For a comforting dish, make homemade green bean casserole with cream of mushroom soup, combining tender green beans in a creamy, savory sauce topped with crispy fried onions. It’s a classic dish that brings warmth to any meal. This green bean casserole recipe is easy to make and always a crowd-pleaser.

A serving of green bean casserole with crispy topping on a plate, with a fork beside it and a casserole dish in the background. Fresh green beans are scattered nearby.
Green Bean Casserole with Cream of Mushroom Soup. Photo credit: Lets Cook Today.

A few years ago, I was tasked with bringing a dish to a family gathering, and I wanted to make something both comforting and familiar. I remembered how much I loved the green bean casserole my mom used to make. It quickly became a hit, everyone was asking for. I also realized that a dish made with care and a little creativity could bring everyone together around the table.

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Making this Dish Ahead of Time

Making green bean casserole ahead of time can save you time and stress, especially during busy dinner prep. Simply assemble the casserole, cover it, and store it in the fridge until you’re ready to bake. This way, you can focus on other dishes while they bake to perfection.

Perfect Time to Serve Green Bean Casserole with Cream of Mushroom Soup

Green bean casserole is perfect for holiday dinners, like Thanksgiving or Christmas, and it’s also a great addition to family gatherings or potlucks. Its comforting flavors make it ideal for cooler months, but it works for any meal where you want a hearty, satisfying side. Serve it alongside roast meats, mashed potatoes, or other comfort foods.

Why Make This Dish at Home

Making green bean casserole at home allows you to control the ingredients, ensuring a fresher, more flavorful dish. You can also customize the recipe by using fresh green beans and making your own mushroom sauce if you prefer. It’s a fun and easy dish to prepare that everyone will enjoy.

A metal plate filled with green bean casserole topped with fried onions and herbs, with pots and a wooden spoon in the background.
A metal plate filled with green bean casserole.

Your Easy-Peasy Guide for Homemade Green Bean Casserole with Cream of Mushroom Soup

This homemade green bean casserole with cream of mushroom soup is the ultimate comfort dish for cozy nights. It’s creamy, flavorful, and topped with a satisfying crunch that makes every bite irresistible.

Kitchen Must-Haves

  • Casserole Dish: Perfect for baking your green bean casserole to golden perfection. It ensures even heat distribution, creating a creamy, bubbly, and crispy dish.
  • Mixing Bowl: A mixing bowl is essential for combining the ingredients like green beans and mushroom soup. It makes prepping the casserole easy and prevents mess.
  • Spatula: Helps mix the casserole ingredients smoothly and evenly. It’s also perfect for spreading the casserole mixture into the dish without making a mess.

Grab these Ingredients

  • Green Beans: Trimmed green beans are the base of this classic casserole, offering a fresh and crunchy texture. They provide a nice contrast to the creamy mushroom soup.
  • Mushroom Soup: Mushroom soup adds a rich, creamy base with an earthy flavor. It brings everything together and gives the casserole its classic taste and texture.
  • Golden Fried Onions: Golden fried onions add a crispy, savory topping that makes the casserole irresistible. They create the perfect crunchy finish and a burst of flavor.

*Exact measurements are listed in the recipe card below.

Step-by-Step Procedure to Make a Perfect Green Bean Casserole with Cream of Mushroom Soup

First: Gather Ingredients for the Casserole

Collect all the ingredients you’ll need for the casserole, including green beans, cream of mushroom soup, and fried onions. Make sure everything is ready to go, so the cooking process is smooth and easy. Having everything prepped ensures a stress-free time in the kitchen.

Three bowls containing green beans, cream of mushroom soup with sliced mushrooms, and golden fried onions are arranged on a white wooden surface.
Ingredient for Green Bean Casserole with Cream of Mushroom Soup.

Second: Blanch the Green Beans

Trim the ends of the green beans and blanch them in a large skillet of boiling water for about 3-4 minutes. Once they are tender but still crisp, drain the beans and set them aside in a bowl. This step ensures the beans will be perfectly cooked in the casserole.

A person holds a pot filled with cut green beans on a wooden table, surrounded by chopped potatoes, whole potatoes, mushrooms, and a bowl of soup.
Cut green beans on a wooden table.

Third: Make the Green Bean Mixture

In a bowl, pour the cream of mushroom soup over the blanched green beans. Mix until the beans are completely coated in the mushroom sauce. This creamy mixture forms the base of the casserole.

Step-by-step images showing green beans in a bowl, adding mushroom soup, and mixing to make green bean casserole.
Green beans in a bowl.

Fourth: Assemble the Casserole

Transfer the green bean and mushroom mixture into a casserole dish. You can add a little more soup or sauce if you’d like it extra creamy. Once everything is in the dish, sprinkle fried onions on top for a crunchy finish.

A hand stirs a casserole dish filled with green beans and mushrooms; cooked noodles, vegetables, and kitchen utensils are on a rustic white table.
Stirs a casserole dish filled with green beans and mushrooms.

Five: Bake the Casserole

Place the casserole in the oven and bake at 400°Fahrenheit (200°Celsius) for 10 minutes. Bake until the top is golden brown and the onions are crispy. This will give the casserole a delicious, crunchy topping and a warm, creamy interior.

A collage of food in a pan.
Green bean casserole topped with cooked onions.

Handy Tips for Tasty Wins:

  • Prep and Store: If you’re making it ahead, assemble the casserole, but leave the crispy topping off. Cover it and refrigerate for up to 2 days, then add the topping just before baking for that perfect crunch.
  • Boost the Creaminess: Mix in a bit of sour cream or cream cheese with the mushroom soup for a richer texture. It adds a subtle tang and creaminess that elevates the dish.
  • Try a Veggie Swap: Switch out the green beans for other veggies like Brussels sprouts or peas for a fresh twist while keeping the dish comforting.
  • Keep the Toppings Fresh: To keep the fried onions extra crispy, toast them separately in the oven and sprinkle on top right before serving, preserving their crunch and golden color.
A close-up of a fork holding a bite of green bean casserole with mushrooms and crispy topping over a bowl.
A close-up of a fork holding a bite of green bean casserole.

Your Questions, My Answers

What are the Pairings to Try with this Casserole Dish?

Green bean casserole with cream of mushroom soup pairs wonderfully with roasted meats like turkey, chicken, or ham. You can also serve it alongside fried pickles in air fryer, mashed potatoes or a simple salad to balance out the richness of the casserole. For extra flavor, try adding a tangy cranberry sauce or a side of cornbread to complement the dish.

How to Store Green Bean Casserole with Cream of Mushroom Soup?

Once the casserole has cooled down, store any leftovers in an airtight container in the refrigerator. It will keep for up to 3 days, and you can reheat it in the oven until warmed through, but be sure to cover it with foil to prevent drying out.

A plate of green bean casserole topped with crispy fried onions, garnished with herbs; a casserole dish and wooden spoon are in the background.
A plate of green bean casserole.

How to Freeze this Casserole Recipe?

To freeze, assemble the casserole without the fried onion topping and cover it tightly with plastic wrap and foil. It will be kept in the freezer for up to 2-3 months. When ready to bake, thaw it overnight in the refrigerator and add the crispy topping before baking as directed.

More Stress-Free Recipes You’ll Love

Need easy and tasty meal ideas? Onion rings crisps are the perfect crunchy snack or side dish, bringing a crispy, golden bite to any meal. Cheese-stuffed chicken breasts with tomato basil offer a rich, melty center packed with fresh flavors, making dinner feel a little fancy without the hassle.

Cooking bacon on a stove is a simple skill that guarantees perfectly crispy strips every time—no more guessing or mess. With these recipes, you’ll have stress-free, flavorful dishes ready in no time.

Pin and Come Back Anytime

A creamy green bean casserole topped with crispy onions is served in a round baking dish, with a portion scooped out onto a plate nearby.
A creamy green bean casserole.

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A close-up of a serving of green bean casserole with mushrooms and crispy onions on a dark plate, with a fork and casserole dish in the background.

Green Bean Casserole with Cream of Mushroom Soup

Zuzana Paar
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This homemade green bean casserole is creamy, savory, and full of comforting flavor. Tender green beans are baked in a rich sauce and topped with crispy fried onions. It is a simple side dish that works for any meal and is always enjoyed by everyone.
Prep Time 20 minutes
Cook Time 1 hour 10 minutes
Course Main Course, Main Dishes
Cuisine American, International
Servings 6 Portions
Calories 249 kcal

Ingredients
 
 

  • 4 Cups Green Beans trimmed
  • 2 Cups Mushroom Soup
  • 3 Cups Golden Fried Onions

Instructions
 

  • Collect green beans, cream of mushroom soup, and fried onions, making sure everything is prepped and ready for a smooth cooking process.
  • Trim and blanch green beans in boiling water for 3–4 minutes until tender-crisp, then drain and set aside.
  • Combine blanched green beans with cream of mushroom soup in a bowl, stirring until evenly coated.
  • Transfer the mixture to a casserole dish, add extra soup if desired, and top with fried onions for crunch.
  • Bake at 400°Fahrenheit (200°Celsius) for about 10 minutes until the top is golden and the onions are crisp.

Notes

  • Prep and Store: If you’re making it ahead, assemble the casserole, but leave the crispy topping off. Cover it and refrigerate for up to 2 days, then add the topping just before baking for that perfect crunch.
  • Boost the Creaminess: Mix in a bit of sour cream or cream cheese with the mushroom soup for a richer texture. It adds a subtle tang and creaminess that elevates the dish.
  • Try a Veggie Swap: Switch out the green beans for other veggies like Brussels sprouts or peas for a fresh twist while keeping the dish comforting.
  • Keep the Toppings Fresh: To keep the fried onions extra crispy, toast them separately in the oven and sprinkle on top right before serving, preserving their crunch and golden color.

Nutrition

Serving: 1PortionCalories: 249kcalCarbohydrates: 21gProtein: 5gFat: 16gSaturated Fat: 7gPolyunsaturated Fat: 0.2gMonounsaturated Fat: 1gCholesterol: 4mgSodium: 833mgPotassium: 261mgFiber: 2gSugar: 2gVitamin A: 506IUVitamin C: 9mgCalcium: 30mgIron: 1mg

Disclaimer

Please note that nutrient values are estimates only. Variations can occur due to product availability and manner of food preparation. Nutrition may vary based on methods of origin, preparation, freshness of ingredients, and other factors.

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By Zuzana Paar on October 27th, 2025
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About Zuzana Paar

Welcome to Let's Cook Today, where we make cooking simple and delicious together. Join me as we whip up tasty recipes that turn every mealtime into a food adventure. Whether you're cooking for yourself, your family, friends, or hosting a party, we've got the perfect portions and flavors to make every dish a delight. Let's cook together and savor the joy of creating amazing meals, effortlessly.

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