Tender green beans and savory mushrooms in a cheesy sauce topped with crispy fried onions make this delicious Green Bean Casserole unforgettable!
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!
- 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!
- 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.
- 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.
How to Make it
Following is a brief overview – please see the recipe card for ingredient amounts and full detailed instructions.
- Cook onions, mushrooms and garlic in butter in a large skillet.
- Add soup and heavy cream. Stir to combine and bring to a simmer.
- Add cheese, salt and pepper. Stir until cheese is melted.
- Add green beans and ½ cup of the French fried onions. Stir to coat.
- 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.
It’s sure to be a hit!
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.
More Holiday Side Dishes
Green Bean Casserole
- 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
- Preheat your oven to 350 degrees F. Spray a 2 quart baking dish with cooking spray. Set aside.
- Melt butter in a large skillet over medium heat. Add onions and cook for 2 minutes, stirring often. Add mushrooms and cook until softened, stirring often (about 3 to 4 minutes). Add garlic and cook for 30 seconds, while stirring.
- Add soup and heavy cream. Stir to combine. Bring to a simmer, then add cheese, salt and pepper. Stir until cheese is melted.
- Add green beans and ½ cup of the French fried onions. Gently stir to coat as evenly as possible.
- Transfer to prepared baking dish and spread evenly.
- Bake (uncovered) for 25 minutes. Using oven mitts, carefully remove from oven and sprinkle evenly with the remaining 1 ½ cups of the French fried onions. Return to oven and bake for an additional 5 minutes, or until onions are golden brown.
- Let stand for 10 minutes before serving (sauce will thicken as it cools).
- To make-ahead: Prepare casserole but do NOT top with fried onions. Cover baking dish tightly with aluminum foil and refrigerate for up to 2 days. Remove from fridge 30 to 40 minutes before ready to bake and allow to come close to room temperature. Bake as directed.
If provided, nutritional info is a courtesy, is not guaranteed and should only be considered as a guideline.
Originally published November 2015. Updated with new photos, new text and recipe revised November 2021.
Recipe inspired by Food Network
Anything topped with fried green onions has my name all over it! This looks delicious!
Amy @ The Blond Cook
Thanks so much, Amanda! Hope you and your family had a great Thanksgiving! 🙂