Description
Stuffed Mushroom Casserole is a cozy, bubbling bake with a crispy, golden panko topping and a creamy, cheesy mushroom base that’s perfect for holiday tables or cool-weather comfort. I love making it with baby bella mushrooms, garlic, fontina, and Parmesan—it’s a simple, make-ahead-friendly dish with deep, savory flavor and just the right textural contrast. Some cooks call it a deconstructed stuffed mushroom bake, and I’ve tested both a creamy and a dairy-light version—both work beautifully. Among mushroom casseroles, this one stands out for its crackly topping, nostalgic depth, and balance of earthiness and brightness. It deserves a place in every cold-weather recipe rotation.
Ingredients
3 tablespoons olive oil
1 1/2 pounds baby bella mushrooms, chopped
3 cloves garlic, minced
1 tablespoon butter
1 teaspoon fresh thyme leaves
1/2 teaspoon salt
1/2 teaspoon black pepper
1/2 teaspoon lemon zest
1/2 cup shredded fontina cheese
1/4 cup grated Parmesan cheese
1/4 cup heavy cream
1/2 cup panko breadcrumbs
1 tablespoon olive oil (for topping)
1/4 teaspoon smoked paprika
2 tablespoons grated Parmesan (for topping)
Extra thyme and lemon zest for garnish (optional)
Instructions
1. Preheat oven to 375°F and butter a medium baking dish.
2. Heat 3 tablespoons olive oil in a wide skillet over medium heat.
3. Add chopped mushrooms and cook undisturbed for 2 minutes, then stir occasionally until browned and moisture has evaporated.
4. Add garlic and butter, stir and cook for 1-2 minutes until fragrant.
5. Stir in thyme, salt, pepper, and lemon zest. Remove from heat and let cool slightly.
6. Fold in fontina and Parmesan cheeses.
7. Add cream and stir to combine.
8. Spoon the mushroom mixture into the prepared dish and smooth the top.
9. In a small bowl, combine panko, 1 tablespoon olive oil, smoked paprika, and 2 tablespoons Parmesan.
10. Sprinkle topping evenly over the casserole.
11. Bake for 20-25 minutes, until bubbling and golden brown.
12. Let rest for 5 minutes before serving. Garnish with thyme and lemon zest if desired.
Notes
Use a mix of mushrooms for deeper flavor.
Let the mushroom base cool before adding cheese to maintain texture.
Taste the filling before baking to adjust seasoning perfectly.
- Prep Time: 20 minutes
- Cook Time: 25 minutes
- Category: Casserole
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: 270
- Sugar: 2g
- Sodium: 380mg
- Fat: 20g
- Saturated Fat: 8g
- Unsaturated Fat: 10g
- Trans Fat: 0g
- Carbohydrates: 16g
- Fiber: 2g
- Protein: 9g
- Cholesterol: 30mg
Keywords: stuffed mushroom casserole, holiday side dish, vegetarian casserole