This Baked Cheesy Mushroom Casserole is a rich and creamy dish loaded with tender mushrooms, savory herbs, and a decadent cheese blend, all baked to golden perfection. Topped with buttery breadcrumbs, it has the ideal balance of creamy and crispy textures, making it a delicious side for any main course or a cozy comfort food option on its own. Just add a sprinkle of fresh parsley before serving for a pop of color and flavor!
Why You’ll Love This Recipe:
Creamy and Cheesy: The combination of cheddar, Parmesan, and heavy cream makes for a rich, cheesy casserole that’s incredibly satisfying.
Easy to Make: With simple prep and minimal ingredients, this recipe is easy to put together and doesn’t require much time.
Versatile Side Dish: It pairs wonderfully with a wide variety of main courses, making it a great side for family dinners or special gatherings.
Perfect Texture: The creamy sauce and tender mushrooms are perfectly balanced by a crispy breadcrumb topping, making each bite a textural delight.
Key Ingredients:
Button Mushrooms: Button mushrooms are mild and tender, but you can substitute with cremini or baby bella mushrooms for a slightly deeper flavor.
Garlic Powder and Thyme: These seasonings bring out earthy flavors in the mushrooms, adding a savory touch that complements the creaminess.
Cheddar and Parmesan Cheese: Cheddar melts beautifully, providing a gooey texture, while Parmesan adds a rich, nutty flavor.
Heavy Cream: Heavy cream forms the base of the sauce, creating a rich, velvety texture that brings all the ingredients together. For a lighter option, you could use half-and-half.
Breadcrumbs: Adding breadcrumbs with melted butter gives a crispy finish, but you can omit if you prefer a gluten-free version or want to reduce carbs.
Fresh Parsley: Adds a fresh, herbaceous note and vibrant color to the final dish.
Complete list of ingredients with quantities and instructions is located in the recipe card below
Step-by-Step Instructions
Preheat the Oven:
Preheat your oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish to prevent sticking.
Season the Mushrooms:
In a mixing bowl, combine the sliced mushrooms with olive oil, garlic powder, thyme, salt, and pepper. Toss until the mushrooms are evenly coated with the seasoning.
Layer the Dish:
Spread the seasoned mushroom mixture evenly across the bottom of the prepared baking dish.
Add the Cheese:
Sprinkle the shredded cheddar and grated Parmesan cheese evenly over the mushrooms, creating a cheesy layer.
Pour the Cream:
Pour the heavy cream evenly over the mushrooms and cheese, which will form a creamy sauce as it bakes.
Prepare the Breadcrumb Topping:
In a separate bowl, combine the melted butter with breadcrumbs, stirring until well mixed. Sprinkle this breadcrumb mixture over the top of the casserole for a crispy topping.
Bake the Casserole:
Place the baking dish in the preheated oven and bake for 25-30 minutes, or until the top is golden brown and the sauce is bubbling around the edges.
Would you like to save this?
Just drop your email here and I'll send it right away!
Optional Broil:
For an extra crispy topping, broil the casserole for an additional 2-3 minutes after baking. Watch closely to avoid burning.
Rest and Garnish:
Let the casserole rest for a few minutes to set. Garnish with freshly chopped parsley for a touch of color and flavor before serving.
Serving Suggestions:
This cheesy mushroom casserole pairs beautifully with many main dishes. Here are a few ideas:
Grilled Chicken or Steak: The rich creaminess of the casserole complements the smokiness of grilled meats.
Roast Beef or Pork: Serve alongside a hearty roast for a classic comfort-food meal.
Pasta: Pair with a simple pasta or risotto for a filling vegetarian meal.
Roasted Vegetables: Add a side of roasted asparagus or Brussels sprouts to balance out the richness.
Storage and Reheating Tips:
This casserole stores well, making it ideal for leftovers or make-ahead prep.
Refrigeration: Store any leftovers in an airtight container in the refrigerator for up to 3 days.
Freezing: If you’d like to freeze it, cool the casserole completely, wrap it tightly in plastic wrap and foil, and freeze for up to 1 month. Thaw overnight in the refrigerator before reheating.
Reheating: Reheat in the oven at 350°F (175°C) for 10-15 minutes, or until warmed through. Add a splash of cream if the casserole has thickened too much.
Recipe Variations:
Add Spinach: Add a handful of fresh spinach to the mushroom layer for extra nutrients and flavor.
Low-Carb: Omit the breadcrumbs for a low-carb version, or use crushed pork rinds for a keto-friendly topping.
Different Cheese: Swap cheddar for mozzarella or Gruyère for a slightly different flavor.
Herbed Variation: Add fresh herbs like basil, rosemary, or thyme for a fragrant twist.
Spicy Kick: Mix a pinch of red pepper flakes into the breadcrumb topping for a bit of heat.
Conclusion:
This Baked Cheesy Mushroom Casserole is an easy-to-make, comforting dish that brings together earthy mushrooms, savory cheeses, and a creamy sauce with a touch of crunch on top. It’s perfect for weeknight dinners, holiday meals, or any time you’re craving something rich and satisfying.
Give this recipe a try and savor every cheesy, creamy bite!
Baked Cheesy Mushrooms Casserole
Ingredients
- 1 lb button mushrooms sliced
- 1 tbsp olive oil for seasoning
- 1 tsp garlic powder for seasoning
- 1 tsp dried thyme for seasoning
- 1/2 tsp salt to taste
- 1/4 tsp black pepper to taste
- 1 cup shredded cheddar cheese for topping
- 1/2 cup grated Parmesan cheese for topping
- 1 cup heavy cream for creamy sauce
- 2 tbsp unsalted butter melted, for breadcrumb topping
- 1/2 cup breadcrumbs optional, for crispy topping
- 1 fresh parsley chopped, for garnish
Instructions
- Preheat your oven to 375°F (190°C) and lightly grease a 9×13-inch baking dish to prevent sticking.
- In a mixing bowl, combine sliced mushrooms with olive oil, garlic powder, thyme, salt, and pepper. Toss to coat the mushrooms evenly.
- Spread the seasoned mushroom mixture evenly across the bottom of the prepared baking dish.
- Sprinkle shredded cheddar and grated Parmesan cheese evenly over the mushrooms, creating a cheesy layer.
- Pour the heavy cream evenly over the mushrooms and cheese, which will form a creamy sauce as it bakes.
- In a separate bowl, combine melted butter with breadcrumbs, stirring until well mixed. Sprinkle this breadcrumb mixture over the top of the casserole.
- Place the baking dish in the preheated oven and bake for 25-30 minutes, or until the top is golden brown and the sauce is bubbling around the edges.
- For an extra crispy topping, broil the casserole for an additional 2-3 minutes after baking. Watch closely to avoid burning.
- Let the casserole rest for a few minutes. Garnish with freshly chopped parsley before serving.