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–+ servings
Green Bean Casserole Side

Ultimate Green Bean Casserole Side with Creamy Mushroom Sauce

This green bean casserole side features a creamy mushroom sauce and is perfect for any gathering.
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Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings: 8 servings
Course: Side Dishes
Cuisine: American
Calories: 250
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Casserole
  • 1 pound Fresh or Frozen Green Beans Blanched for best texture
  • 4 tablespoons Butter Can replace with olive oil
  • 8 ounces Sliced Fresh Mushrooms Avoid canned mushrooms
  • 2 tablespoons Flour Substitute with gluten-free flour if desired
  • 1-2 cups Milk Almond or coconut milk for dairy-free
  • 1 cup Grated Parmesan Cheese Can use dairy-free cheese
  • 1 cup Fried Shallots Homemade preferred
  • 1 teaspoon Garlic Powder Fresh garlic can be used
  • 1 teaspoon Onion Powder Adjust seasonings to taste
  • Salt and Pepper To taste

Equipment

  • large pot
  • Large Skillet
  • Whisk
  • Baking Dish

Method
 

Step-by-Step Instructions
  1. Start by blanching the fresh or frozen green beans in a large pot of boiling salted water for 3–4 minutes until bright green and tender-crisp. Transfer them to an ice water bath to cool.
  2. In a large skillet, melt 4 tablespoons of butter over medium heat. Add sliced fresh mushrooms and sauté for 5–7 minutes until browned and tender.
  3. Sprinkle in 2 tablespoons of flour, stirring continuously to form a roux. Cook for an additional minute before gradually whisking in 1–2 cups of milk until the sauce thickens.
  4. Season the sauce with 1 teaspoon of garlic powder and onion powder, along with salt and pepper to taste, ensuring even distribution.
  5. Gently stir the blanched green beans into the creamy mushroom sauce, ensuring even coating. Adjust seasoning as needed.
  6. Preheat the oven to 375°F (190°C). Spread the mixture in a greased 2-quart baking dish, topping it with 1 cup of grated parmesan cheese and 1 cup of fried shallots.
  7. Bake for 20–30 minutes until bubbly and golden brown. Allow to cool slightly before serving.

Nutrition

Serving: 1servingCalories: 250kcalCarbohydrates: 25gProtein: 8gFat: 15gSaturated Fat: 9gPolyunsaturated Fat: 2gMonounsaturated Fat: 3gCholesterol: 30mgSodium: 300mgPotassium: 450mgFiber: 4gSugar: 3gVitamin A: 700IUVitamin C: 10mgCalcium: 200mgIron: 1.5mg

Notes

Make this casserole a day in advance for stress-free entertaining. It stores well in the fridge and can be frozen for longer storage.

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