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Green Bean Casserole From Scratch

Green Bean Casserole From Scratch: Made with a homemade mushroom cream sauce ,and topped with do it yourself french fried onions. This decadent holiday side dish can even be made ahead!
Course Side Dish
Cuisine American
Prep Time 30 minutes
Cook Time 25 minutes
Total Time 55 minutes
Servings 8 Servings
Author Krystle
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  • <b> For the Homemade French Fried Onions </b>
  • 2 Sweet Onions Diced
  • 1/3 Cups All Purpose Flour
  • 2 Tablespoons Panko Bread Crumbs
  • Salt and Pepper To Taste
  • Oil For Frying (I used Canola)
  • <b> For the Homemade Mushroom Sauce</b>
  • 3 Tablespoons Butter
  • 12 Ounces Mushrooms Thinly Sliced
  • Salt and Pepper To Taste
  • 2 Cloves Garlic Minced
  • 3 Tablespoons All Purpose Flour
  • 1/2 Cup Chicken Broth
  • 1/2 Cup Heavy Cream
  • 3-4 Cups Fresh Green Beans Trimmed and Halved


  • <b> For the Homemade French Fried Onions </b>
  • In a medium bowl, toss onion, flour, breadcrumbs, and salt and pepper.
  • In a large skillet, heat ~1/2 inch of oil. Add onions a little at a time. Fry until golden brown.
  • Drain on paper towels. Set aside.
  • <b> For the Green Beans </b>
  • In a large stock pot,boil green beans in salted water for ~5 minutes. Drain and put into an ice bath. Set aside.
  • <b> For the Homemade Mushroom Cream Sauce </b>
  • In a large skillet, melt butter over medium high heat. Add in mushrooms, salt, and pepper. Cook for 3-5 minutes.
  • Stir in garlic, and cook for ~1 more minute. Stir in flour.
  • Stir in broth a little at a time, stirring constantly. Simmer for 1 minutes. Add cream.
  • Cook for 5-7 more minutes or until thickened.
  • <b> For the Green Bean Casserole From Scratch: Putting It All Together </b>
  • Stir cooked green beans into the sauce until well coated. Top with french fried onions.
  • Bake for 15-20 minutes or until bubbling.
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