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Cheesy Mushroom Casserole

Cheesy Mushroom Casserole
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Cheesy Mushroom Casserole is a comforting and easy-to-make dish featuring tender mushrooms, creamy cheese, and a golden crispy breadcrumb topping. Perfect as a hearty vegetarian main or a flavorful side, this casserole blends rich umami flavors and creamy textures for a satisfying meal suitable for any occasion.

Ingredients

Scale

Vegetables and Aromatics

  • 1 lb fresh mushrooms (button or cremini), cleaned & sliced
  • 1 medium onion, finely chopped
  • 2 cloves garlic, minced

Dairy and Cheese

  • 1 cup shredded cheddar cheese
  • 1 cup shredded mozzarella cheese
  • 1 cup sour cream or cream
  • 2 tbsp butter

Toppings and Seasoning

  • 1 cup breadcrumbs (or gluten-free alternative)
  • Salt, to taste
  • Black pepper, to taste
  • Fresh herbs (thyme or parsley), chopped, optional

Instructions

  1. Prepare the mushrooms and aromatics: Clean and slice the mushrooms evenly. Heat butter in a skillet over medium heat and sauté the onions and garlic until fragrant and translucent. Add the mushrooms and cook for 8-10 minutes until they release their moisture and become tender.
  2. Mix the creamy base: In a large bowl, combine sour cream or cream with shredded cheddar and mozzarella cheeses, salt, pepper, and chopped fresh herbs if using. Fold in the sautéed mushroom and onion mixture until everything is well coated and creamy.
  3. Assemble the casserole: Transfer the mixture into a greased baking dish. Evenly sprinkle the breadcrumb topping over the surface for a crispy crust.
  4. Bake until golden and bubbly: Place the casserole in a preheated oven at 350°F (175°C) and bake for 25-30 minutes or until the cheese is melted, bubbly, and the breadcrumbs have turned golden brown.

Notes

  • Use firmer mushrooms like cremini to prevent a soggy casserole.
  • Sauté mushrooms thoroughly to evaporate excess moisture and deepen flavor.
  • Combine sharp cheddar and mild mozzarella for perfect melting and flavor balance.
  • Don’t skip the breadcrumbs—they add a delightful crispy topping.
  • Allow the casserole to rest for a few minutes before serving to set flavors and ease slicing.

Nutrition

Keywords: cheesy mushroom casserole, vegetarian casserole, mushroom side dish, comfort food, baked casserole

Find it online: https://recipesemilly.com/cheesy-mushroom-casserole/