This Green Bean Casserole Recipe is amazing! The dish is loaded with fresh green beans and sauteed mushrooms smothered in a creamy sauce and topped with shredded cheese and homemade fried onions. The perfect side dish for any occasion, especially the Holidays! 

Try these other side dishes like the Cheesy Asparagus Gratin, or Brussel Sprouts with Mushrooms and Chicken and Mushroom Canapes.

Green bean casserole in a casserole dish with a spoon. Topped with fresh greens, cheese, and fried onion rings.

This post may contain affiliate links. Please read our disclosure policy.

Pin this recipe HERE! Follow Valentina’s Corner on Pinterest for more inspiration!

This green bean casserole from scratch is going to become a favorite! Tender fresh green beans combined with sauteed mushrooms and onion in a creamy mixture, topped with shredded cheese and homemade onion strings. The creamy sauce compliments the green beans and brings out the mushrooms making it the perfect side dish everyone will love.

Green bean casserole recipe topped with cheese, onion rings, and chopped greens.

How to make the best Green Bean Casserole-

  • Trim edges of green beans and cook until tender. The green beans make be cut in half if desired.
  • Slice and sautee mushrooms with onion until golden.

Simple and delicious green beans casserole recipe. How to prepare the green beans and sautéing the mushrooms.

  • In a casserole dish, combine the green beans with sauteed mushrooms.
  • In a bowl, combine the ingredients for the sauce and pour into dish. Mix well.
  • Prepare homemade onion rings using THIS recipe. (Skip this step if using store-bought onion rings.)
  • Top casserole with cheese and onion rings.
  • Cover dish with foil and bake.

How to make this green bean casserole recipe with mushrooms, cheese, and onion strings.

Can I use canned beans?

Though fresh green beans perform best in a green bean casserole, canned beans may be used. To use canned beans, just drain the water and continue with the recipe. DON’T cook the green beans.

What cheese should I use?

Use your favorite mixed cheese! Colby Jack, a combination of Mild Cheddar and Mozzarella will work, or Four Cheese, all of these are great options for this easy green bean casserole.

Baked green beans with mushrooms, a creamy sauce, cheese, and fried onion strings in a casserole dish.

Tools used to make this recipe: casserole dish, skillet, spatula.

I hope you LOVED this recipe. Don’t forget to share your creations with us on social media, #ValentinasCorner. 🙂

GETTING TO KNOW YOU: What’s your favorite method of serving green beans?

Green Bean Casserole Recipe

5 from 1 vote
This Green Bean Casserole Recipe loaded with fresh green beans and sauteed mushrooms smothered in a creamy sauce and with shredded cheese and fried onion.
Prep Time: 15 minutes
Cook Time: 30 minutes
Total Time: 45 minutes
Servings: 6 servings, as side


  • 1 lb fresh green beans, trimmed
  • 12 oz white mushrooms, trimmed
  • 1/2 large onion
  • 1 cup Mexican four cheese
  • 2 Tbsp olive oil (or canola oil)
  • fried onion strings



  • Align the green beans with the stem facing in one direction. Cut off the stems. (Green beans may be cut in half if desired.)
  • Add green beans to a large pot. Cover completely with water. Bring to a boil and cook until tender, about 15 minutes. Drain beans and transfer to a casserole dish.
  • Clean and slice mushrooms. Finely chop 1/2 the large onion. (Use the other half of onion to prepare homemade onion strings.)
  • In a skillet, heat 2 Tbsp oil. Saute mushrooms with onions until golden. 
  • Slice the other 1/2 of onion, vertically and prepare fried onion strings. optional.
  • Add the mushrooms/onions to the green beans and mix well. Lightly season with salt and pepper.
  • In a small bowl combine all the ingredients for the sauce. Add to the green beans. Mix.
  • Sprinkle the cheese on over everything. Add fried onions to the edges of the dish. 
  • Cover the baking dish with foil.
  • Bake covered for 25 minutes in a preheated oven to 375° F. Remove foil, bake uncovered an additional 10 minutes until cream bubbles and cheese completely melts. 
  • Enjoy! 


Calories: 175kcalCarbohydrates: 8gProtein: 8gFat: 13gSaturated Fat: 5gCholesterol: 24mgSodium: 232mgPotassium: 385mgFiber: 2gSugar: 4gVitamin A: 815IUVitamin C: 11.1mgCalcium: 178mgIron: 1.2mg
(The nutrition information provided is an estimate and will vary based on cooking methods and brands of ingredients used.)


< div>