Name: Green Bean Casserole
Prep time: 10 min
Cook time: 40 min
Total time: 50 min
Ingredients: 2 tablespoons butter (unsalted); ½ cup chopped yellow onion; 2 cups sliced fresh mushrooms (white or baby bella); 1 tablespoon minced fresh garlic; 1 (10.5 ounce) can condensed cream of mushroom soup (or cream of chicken or celery); 1 cup heavy cream; 1 cup finely shredded Parmesan cheese (or cheddar); ½ teaspoon salt (more or less, to taste); ½ teaspoon black pepper (more or less, to taste); 1 (16 ounce) bag frozen cut green beans (thawed and patted dry); 2 cups French fried onions (divided)

Jump to Recipe

Tender green beans and savory mushrooms in a cheesy sauce topped with crispy fried onions make this delicious Green Bean Casserole unforgettable!

Green bean casserole in a white baking dish with a spoon.

I sure do love turkey at Thanksgiving, but give me ALL the side dishes, including a huge helping of this casserole!

This is a delicious spin on a familiar classic using frozen green beans, onions, fresh mushrooms, cream of mushroom soup, garlic, heavy cream, Parmesan cheese, and of course – French fried onions!

I love it because it’s simple to prepare and it’s not the “same ole” recipe everyone’s used to. It’s a must-have staple side dish at your holiday table!

Ingredients Notes

Overhead view of ingredients for green bean casserole.

Green beans – frozen green beans that have been thawed and patted dry with a paper towel.
Mushrooms – I used white mushrooms, but baby bella are delicious as well!
Onion
French fried onions
Butter – I use unsalted so that I can control the salt, but feel free to use salted.
Cream of mushroom soup – cream of chicken or cream of celery soup can also be used.
Garlic
Parmesan cheese – I’ve also prepared this with cheddar cheese and it’s delicious as well!
Salt and black pepper – feel free to adjust the amounts to your liking.
Heavy cream – do not substitute with milk; you will need heavy cream in this recipe to thicken the sauce.

Green bean casserole on a round white plate beside two forks.

How to Make it

Following is a brief overview – please see the recipe card for ingredient amounts and full detailed instructions.

Two images showing how to prepare sauce for easy green bean casserole.

Cook onions, mushrooms and garlic in butter in a large skillet.
Add soup and heavy cream. Stir to combine and bring to a simmer.

Preparing green bean casserole in a skillet before being transferred to a baking dish.

Add cheese, salt and pepper. Stir until cheese is melted.
Add green beans and ½ cup of the French fried onions. Stir to coat.

Three images of casserole in a dish before baking, after baking and after topping with fried onions.

Transfer to a prepared baking dish and spread evenly.
Bake for 25 minutes.
Remove from oven and sprinkle with remaining French fried onions. Bake for an additional 5 minutes, or until onions are golden brown.

Overhead view of cheesy green bean casserole in an oval white baking dish.

It’s sure to be a hit!

Make-Ahead Instructions

Prepare casserole but do NOT top with onions. Cover baking dish tightly with foil and refrigerate for up to 2 days. Remove from refrigerator 30 to 40 minutes before ready to bake and allow to come close to room temperature. Bake as directed.

Front view of green bean casserole on a small round white plate.

Enjoy!

More Holiday Side Dishes

Follow along! Subscribe via email to never miss a recipe.

SUBSCRIBE

Join me on Pinterest, Facebook and Instagram.