Classic Green Bean Casserole

Featured in Complementary Creations.

This dish combines tender green beans with a creamy mushroom sauce seasoned with soy sauce and black pepper. The mixture is baked until hot and then topped with crispy fried onions, which toast to a golden brown finish. It offers a satisfying balance of textures and flavors, perfect for holiday dinners or cozy weeknight meals. Using whole milk or half-and-half enriches the sauce, while blanching fresh green beans preserves their color and crunch. Adding sautéed mushrooms can deepen the savory notes.

Barbara Chef
Updated on Thu, 27 Nov 2025 15:13:15 GMT
A bowl of food with a fork in it. Pin it
A bowl of food with a fork in it. | gracefulflavors.com

This green bean casserole is a timeless dish that delivers comfort and ease in every bite. It’s perfect for holiday tables or a simple weeknight dinner when you want a little something cozy without a lot of fuss. The creamy mushroom base combined with tender green beans and crispy fried onions on top make it a sure crowd-pleaser.

I first made this recipe at a family gathering, and it became an instant hit. Now it often appears on my holiday menu and sometimes sneaks its way into regular dinners too.

Ingredients

  • Condensed cream of mushroom soup: gives a creamy, savory base choose a brand with good mushroom flavor
  • Milk: adds richness whole milk makes it extra smooth if you have it on hand
  • Soy sauce: enhances umami so the casserole feels more complex
  • Cut green beans: fresh tastes best but canned or frozen works well if fresh, blanch briefly to keep them vibrant and tender
  • Ground black pepper: adds a subtle kick freshly ground is ideal for better aroma
  • Crispy french fried onions: for that iconic topping crunch and flavor divide between mixing in and finishing on top

Step-by-Step Instructions

Sauté the Aromatics and Mix Ingredients:
In a large bowl, mix the condensed cream of mushroom soup, milk, soy sauce, green beans, and ground black pepper until thoroughly combined. This blend builds the creamy and flavorful base that holds the dish together.
Prepare the Casserole Dish:
Pour the green bean mixture evenly into a 1.5-quart casserole dish to ensure it cooks evenly and the flavors meld throughout.
Bake the Base:
Set your oven to 350 degrees Fahrenheit and bake the casserole uncovered for 20 minutes. This heats through the beans and allows the mixture to thicken a bit.
Add the Crispy Topping:
Remove the casserole and spread the remaining crispy french fried onions on top. This is the layer that will give your dish its signature crunch and golden color.
Finish Baking:
Return the casserole to the oven and bake for another 5 minutes or until the onions are beautifully golden and crunchy but not burnt. Watch closely here to get that perfect texture.
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A bowl of green beans and a bowl of sauce. | gracefulflavors.com

I adore how the crispy onions provide contrast to the tender green beans. One holiday memory that stands out is when my family eagerly passed this around the table, each bite sparking smiles and requests for seconds.

Storage Tips

Store leftovers covered in the fridge for up to three days. Reheat gently in the oven to keep the topping crisp instead of soggy. For freezing, cool completely then cover tightly with foil and freeze for up to two months. Thaw overnight in the fridge before reheating.

Ingredient Substitutions

If you want to go dairy-free, try a plant-based milk and a mushroom soup alternative or homemade sauce made with mushrooms and cashew cream. You can swap soy sauce for tamari or coconut aminos for a gluten-free version. Fresh mushrooms sautéed with garlic make a fantastic addition or substitute for canned soup.

Serving Suggestions

Serve this casserole alongside roasted turkey or baked chicken, and pair it with mashed potatoes or rice for a full comforting meal. A crisp green salad rounds out the plate nicely for some freshness.

Cultural Context

Green bean casserole became a classic American dish in the mid-20th century, often associated with Thanksgiving and family gatherings due to its convenience and comforting flavors. This recipe holds a special place in many homes, symbolizing warmth and togetherness.

A bowl of food with onion rings and mushrooms. Pin it
A bowl of food with onion rings and mushrooms. | gracefulflavors.com

Frequently Asked Questions

→ Can I use fresh green beans instead of canned or frozen?

Yes, fresh green beans can be used. Blanching them briefly before combining helps retain their vibrant color and crisp texture.

→ What can I substitute for cream of mushroom soup?

A homemade mushroom sauce made with sautéed mushrooms, butter, flour, and milk can provide similar creaminess and flavor without using canned soup.

→ How do I make the topping crispy?

Adding the crispy fried onions near the end of baking allows them to brown without burning, ensuring a crunchy topping.

→ Can I prepare this dish in advance?

Yes, you can assemble it ahead of time and refrigerate. Add the fried onions just before the final bake to keep them crispy.

→ What adds depth of flavor to this dish?

Incorporating soy sauce gives a subtle umami boost, and sautéed mushrooms can enhance the overall savory profile.

Classic Green Bean Casserole

Baked green beans in creamy mushroom sauce topped with crispy fried onions, a comforting holiday dish.

Prep Time
10 Minutes
Cook Time
25 Minutes
Total Time
35 Minutes
By: Barbara

Category: Perfect Sides

Difficulty: Easy

Cuisine: American

Yield: 6 Servings

Dietary: Vegetarian

Ingredients

→ Main Ingredients

01 1 (10.5 oz) can condensed cream of mushroom soup
02 1/2 cup milk
03 1 teaspoon soy sauce
04 4 cups cut green beans (from 2 cans, 16 oz frozen package, or 1 lb fresh)
05 1/4 teaspoon ground black pepper

→ Topping

06 1 1/3 cups crispy French fried onions, divided

Instructions

Step 01

Set the oven to 350°F (175°C) to preheat.

Step 02

In a large mixing bowl, stir together condensed cream of mushroom soup, milk, soy sauce, green beans, and black pepper until evenly blended.

Step 03

Pour the mixture into a 1.5-quart casserole dish, spreading it evenly.

Step 04

Bake uncovered for 20 minutes in the preheated oven.

Step 05

Sprinkle the remaining crispy French fried onions evenly over the casserole.

Step 06

Return the dish to the oven and bake for an additional 5 minutes or until the onions turn golden brown.

Notes

  1. Use whole milk or half-and-half for a richer taste. Fresh green beans can be blanched prior to use. Optional: add sautéed mushrooms to enhance flavor.

Tools You'll Need

  • 1.5-quart casserole dish
  • Mixing bowl
  • Oven

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Contains dairy and soy ingredients

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 200
  • Total Fat: 12 g
  • Total Carbohydrate: 20 g
  • Protein: 5 g