Cheesy Mushroom Casserole: A Comforting Delight
This cheesy mushroom casserole is a comforting dish packed with flavor, featuring sautéed mushrooms, onions, and melted Gruyere cheese.
Equipment
- oven
- skillet
- baking dish
- spatula
Ingredients
- ¼ cup olive oil plus more for greasing the pan
- 32 ounces baby Bella or crimini mushrooms sliced
- 1 cup onions chopped
- 2 teaspoons Diamond Crystal kosher salt or 1 teaspoon of any other salt
- 1 tablespoon fresh garlic minced
- ½ teaspoon black pepper
- ½ teaspoon dried thyme
- 1 cup Gruyere cheese shredded
- 1 teaspoon dried parsley for garnish
Instructions
- Preheat the oven to 400°F and grease a 2-quart baking dish with olive oil.
- In a large skillet, heat olive oil and sauté mushrooms, onions, and kosher salt until mushrooms release their liquid, about 10 minutes.
- Add garlic, black pepper, and thyme, cooking for an additional minute before removing from heat.
- Transfer the mixture to the baking dish and top with Gruyere cheese.
- Bake until hot and bubbly, approximately 15 minutes, then garnish with parsley before serving.
Notes
For a crispy top, broil the casserole for 2-3 minutes after baking. Adjust seasonings to taste and store leftovers in an airtight container for up to 4 days.