This cheesy mushroom casserole is a creamy, savory dish that’s incredibly easy to prepare. Perfect for family dinners or a cozy movie night, it combines the rich flavors of mushrooms and Gruyere cheese into a comforting, satisfying snack. You’ll love how quickly it comes together, making it a must-try recipe!
Table of Contents
Cheesy Mushroom Casserole
Gather around for a delightful cheesy mushroom casserole that will fill your kitchen with mouthwatering aromas. This dish is bursting with the earthy flavors of sautéed mushrooms and onions, topped with gooey, melted cheese. It’s a fantastic side or a delicious main course!
Ingredients
Main 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)
Substitution Suggestions
If you’re out of Gruyere cheese, opt for sharp cheddar, Gouda, or provolone. For a different flavor, you can also substitute baby Bella mushrooms with white mushrooms. If desired, replace olive oil with butter or ghee to enhance richness.
Instructions
Prepping the Ingredients
Begin by preheating your oven to 400°F. Grease a 2-quart baking dish with olive oil to prevent sticking. Prepare your ingredients by slicing the mushrooms and chopping the onions, setting the stage for a delightful flavor explosion.
Cooking the Mushroom Mixture
In a large skillet over medium-high heat, add the olive oil. Once hot, toss in the sliced mushrooms, chopped onions, and kosher salt. Sauté these ingredients, stirring occasionally, until the mushrooms release their liquid and it mostly evaporates—about 10 minutes. The mixture should be fragrant and inviting.
Assembling the Casserole
Next, stir in the minced garlic, black pepper, and dried thyme, cooking for an additional minute. Remove the skillet from heat. Carefully transfer the mushroom and onion mixture into the greased baking dish, spreading it evenly. Top it generously with shredded Gruyere cheese, ensuring every bite will be cheesy goodness.
Baking the Casserole
Pop the casserole into the preheated oven and bake until it’s hot and bubbly, around 15 minutes. For an extra touch of flavor, consider broiling it for 2-3 minutes to achieve a beautifully golden crust. Just remember to keep it at a safe distance from the heating element to avoid burning.
Recipe Tips
Broiling for Extra Flavor
If your dish is broiler-safe, broiling for a few minutes can add a lovely crispy texture to the cheese. Just watch it closely, as it can burn quickly!
Adjusting Seasonings
Feel free to adjust the salt and pepper to match your taste. The beauty of this casserole is its versatility—experiment with seasonings to make it your own!
Storage Recommendations
Store any leftovers in an airtight container in the refrigerator for up to 4 days. Reheat in the microwave at 50% power, so you maintain that cheesy, gooey goodness.
Serving Suggestions
Pairing Ideas
This cheesy mushroom casserole pairs wonderfully with a crisp salad or a hearty bread. You can also make it a feature by serving it alongside grilled chicken or steak for a complete meal.
Serving as a Main or Side Dish
Whether it’s a side dish or the main attraction, this casserole is sure to impress. Its creamy texture and rich flavors make it a perfect choice for any occasion.
FAQs
What ingredients are needed for this casserole?
You will need olive oil, baby Bella mushrooms, onions, garlic, Gruyere cheese, and various seasonings.
Can I make this casserole vegetarian?
Yes, this casserole is already vegetarian as it primarily contains vegetables and cheese.
How long does it take to bake?
It takes about 15 minutes to bake this casserole until it is hot and bubbly.
Is this recipe healthy?
This casserole includes healthy ingredients like mushrooms and onions, but it’s also cheesy, so enjoy in moderation!
Can I use different mushrooms?
Absolutely! You can substitute baby Bella mushrooms with white mushrooms or your favorite variety.
Related Recipes to try
Conclusion
This cheesy mushroom casserole is a fantastic way to bring comfort food to your table. It’s simple, delicious, and perfect for any occasion. For more inspiration, check out some delicious ideas on Pinterest that can help you elevate your meal prep game!
Cheesy Mushroom Casserole: A Comforting Delight
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.
