Name: Best Ever Green Bean Casserole Recipe
Prep time: 20 min
Cook time: 45 min
Total time: 1 h 5 min
Cuisine: American
Ingredients: 2 pounds fresh green beans, trimmed and cut in half; 1 medium onion, chopped; 8 ounces mushrooms, chopped; 3-5 garlic cloves, minced; 2 (10.5 ounce) cans condensed cream of mushroom soup; 1 cup buttermilk; 1 cup chicken broth; 1 cup shredded Monterey Jack or mozzarella cheese (freshly shredded is best); ½ tablespoon avocado oil; 3 cups French’s crispy fried onions (divided)

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Introduction

This Best Ever Green Bean Casserole is a delicious twist on the classic holiday side dish. With fresh green beans, creamy mushroom sauce, and crispy fried onions, it’s creamy, flavorful, and full of comforting textures. Perfect for gatherings or a cozy family meal.

A white plate holds a creamy green bean casserole with two visible layers; the bottom layer has bright green beans mixed with a light brown mushroom sauce, while the top layer is covered with crispy, golden fried onions scattered unevenly, and sprinkled fresh green parsley pieces add a touch of color. In the background, a white bowl with mashed potatoes and a white ramekin filled with brown gravy sit on a wooden board, all placed on a white marbled surface. photo taken with an iphone --ar 4:5 --v 7

Ingredients

2 pounds fresh green beans (trimmed and cut in half)
½ tablespoon avocado oil
1 medium onion (chopped)
8 ounce mushrooms (chopped)
3-5 garlic cloves (minced)
2 10.5 ounce cans condensed cream of mushroom soup
1 cup buttermilk
1 cup chicken broth
1 cup shredded Monterey Jack or mozzarella cheese (freshly shredded is best!)
3 cups French’s crispy fried onions (divided)

Instructions

Step 1: Preheat the oven to 350°F. Grease the inside of a 9×13 baking pan with butter or cooking spray and set aside.
Step 2: In a large pot, add enough water to submerge the green beans and bring to a boil. Once boiling, add the green beans and boil for 2-3 minutes. Drain in a colander.
Step 3: Using the same pot over medium heat, add avocado oil and sauté the chopped onions and mushrooms for 3-5 minutes until tender and the onions begin to turn translucent. Add the minced garlic and cook for 1-2 more minutes until fragrant.
Step 4: Stir in the condensed cream of mushroom soup, buttermilk, and chicken broth. Cook, stirring occasionally, for 5-8 minutes until the mixture is heated through.
Step 5: Remove the pot from heat. Stir in the cooked green beans, shredded cheese, and ¾ cup of the crispy fried onions until well combined.
Step 6: Pour the mixture into the prepared baking pan and bake uncovered for 30-35 minutes, until the sauce is bubbly.
Step 7: Remove from oven, top with the remaining 2¼ cups of crispy fried onions, and return to the oven for an additional 10 minutes to heat and crisp the topping.
Step 8: Garnish with fresh chopped parsley if desired. Serve warm and enjoy!

Tips & Variations

For a vegetarian version, substitute vegetable broth for chicken broth.
Use fresh mushrooms for the best flavor and texture; button or cremini mushrooms work well.
Add a pinch of nutmeg or smoked paprika to the sauce for a subtle depth of flavor.
Try sharp cheddar instead of Monterey Jack or mozzarella for a tangier cheese flavor.

Storage

Store leftover casserole in an airtight container in the refrigerator for up to 3 days. To reheat, cover with foil and warm in the oven at 350°F until heated through, about 15-20 minutes. For best texture, add fresh crispy onions on top before serving.

How to Serve

The image shows a white rectangular casserole dish with three main layers visible. The bottom layer is made of green beans coated in a creamy, light beige sauce mixed with bits of mushrooms. The middle layer is thick and creamy, binding the green beans, mushrooms, and small pieces of onion together. The top layer has a generous amount of golden brown, crispy fried onion rings sprinkled with small green herb pieces. A wooden spoon is scooping out some of the creamy green bean mixture, revealing the layers underneath, all set on a white marbled surface with some green parsley placed nearby. Photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I use frozen green beans instead of fresh?

Yes, you can substitute frozen green beans. Thaw and drain them well before adding to the casserole to avoid extra moisture.

Can I prepare this casserole ahead of time?

Absolutely! Assemble the casserole, cover it tightly, and refrigerate for up to 24 hours before baking. Add the crispy onions right before baking for the best crunch.