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Classic Green Bean Casserole with Bacon and Mushrooms

A rich and creamy holiday casserole made with green beans, sautéed mushrooms, crispy bacon, and a golden fried onion topping.
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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 8 servings
Course: Side Dish
Cuisine: American, Holiday
Calories: 320
Ingredients Equipment Method Notes

Ingredients
  

Casserole
  • 1.5 lbs green beans trimmed, halved; or 4 cups frozen
  • 6 slices bacon chopped
  • 8 oz mushrooms sliced
  • 1 onion finely chopped
  • 3 cloves garlic minced
  • 1 can cream of mushroom soup 10.5 oz
  • 0.5 cup milk
  • 0.5 cup sour cream
  • 0.5 cup parmesan cheese grated
  • 0.5 tsp salt
  • 0.5 tsp pepper
  • 1 tsp Worcestershire sauce
Topping
  • 1.5 cups crispy fried onions

Equipment

  • Large skillet
  • Mixing bowl
  • 9x13 baking dish

Method
 

  1. Preheat oven to 375°F (190°C) and grease a 9×13 baking dish.
  2. Boil green beans for 4–5 minutes, drain, and cool.
  3. Cook bacon in a skillet until crispy; remove and reserve 1 tbsp fat.
  4. Sauté mushrooms and onions in bacon fat until softened.
  5. Add garlic and cook 30 seconds.
  6. Mix soup, milk, sour cream, parmesan, Worcestershire, salt, and pepper in a bowl.
  7. Stir in beans, bacon, mushrooms, and onions.
  8. Transfer to baking dish, top with fried onions, and bake 25–30 minutes.

Notes

Add cheese for extra richness or jalapeños for spice.