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holiday casserole recipe with green beans, mushroom

Green Bean Casserole Recipe

Easy, creamy green bean casserole made with frozen green beans — no canned soup needed and seriously crowd-approved. Make-ahead + freezer-friendly!
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Prep Time: 20 minutes
Cook Time: 30 minutes
Total Time: 50 minutes
Servings: 10 servings
Calories: 310kcal
Author: Ruth Truett

Equipment

Ingredients

  • 4 (10 oz bags) frozen, cut green beans, thawed
  • 8 tablespoon salted butter
  • 1 med onion, diced
  • 1 (8 oz container) mushrooms, thinly sliced I used cremini, but any kind will work
  • 3-4 cloves garlic minced
  • 3 tablespoon all-purpose flour
  • 1 cup French's fried onions
  • 1 cup heavy cream
  • 1 cup chicken or vegetable stock
  • kosher salt, to taste
  • fresh ground black pepper, to taste

Casserole Topping

  • 1 cup French's fried onions
  • ½ cup parmesan, grated

Instructions

  • Preheat the oven to 350°.
  • Sauté onions and mushrooms in the butter until softened. Add garlic and cook until fragrant.
  • Sprinkle in flour and whisk for a few minutes to cook out the raw flour taste.
  • Add the fried onions and mix together.
  • Slowly add the broth and cream, whisking continuously. Bring to a simmer and let the sauce thicken a bit. Check for salt and pepper. Add if needed.
  • Add the thawed green beans and mix to combine.
  • Pour the green bean mixture into a greased 9x13 pan. Mix topping ingredients together and sprinkle over the top of the casserole.
  • Bake for approximately 30 minutes or until golden and bubbly.
  • Enjoy!

Nutrition

Serving: 1serving | Calories: 310kcal | Carbohydrates: 18g | Protein: 5g | Fat: 25g | Saturated Fat: 14g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 5g | Trans Fat: 0.4g | Cholesterol: 56mg | Sodium: 301mg | Potassium: 321mg | Fiber: 3g | Sugar: 5g | Vitamin A: 1456IU | Vitamin C: 15mg | Calcium: 110mg | Iron: 1mg
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