Easy Stuffed Mushroom Casserole
Easy Stuffed Mushroom Casserole delivers crispy, golden, and satisfying bites. After making this many times, I know the trick to keep it from getting soggy. The creamy texture and rich flavor make it a family favorite. Try this with our easy vegan thai curry dumpling soup. Jump to Recipe If you love recipes like this, you’ll also enjoy Easy Vegan Thai Curry Dumpling Soup and Mango Sticky Rice Cookies with Toasted Coconut Topping.
Why This Easy Stuffed Mushroom Casserole Is Pure Comfort
- Crispy texture
- Golden crust
- Rich flavor
- Perfect for dinner
What You'll Need for Easy Stuffed Mushroom Casserole
Choosing the right ingredients makes a big difference, but this recipe is forgiving enough to work with what you have.
- 24 large white mushrooms
- 1 cup grated Parmesan cheese
- 1 cup breadcrumbs
- 2 cloves garlic, minced
- 1/2 cup shredded mozzarella cheese
- Salt and pepper to taste
- 1 teaspoon dried thyme
- 1 teaspoon dried rosemary
- 1/4 cup olive oil
- Optional: Fresh parsley for garnish
- Optional: Extra Parmesan cheese
- Optional: Crushed red pepper flakes
📝 Ingredient Notes
- Mushrooms: Use large, firm mushrooms for best results.
- Breadcrumbs: Panko breadcrumbs add a crispier texture.
- Cheese: Mozzarella gives a gooey melt, while Parmesan adds flavor.
🛒 Tools & Equipment I Recommend
- Non-stick baking sheet — Prevents mushrooms from sticking and ensures even cooking → See on Amazon
- Measuring cups and spoons — Ensures accurate ingredient portions for consistent results → See on Amazon
How to Make Easy Stuffed Mushroom Casserole
- Prep: Preheat oven to 375°F (190°C). Clean mushrooms and remove stems. Place in a baking dish.
- Mix: In a bowl, mix Parmesan, breadcrumbs, garlic, thyme, rosemary, and olive oil. Season with salt and pepper.
- Fill: Spoon mixture into mushroom caps. Top with mozzarella cheese.
- Bake: Bake for 20–25 minutes until golden and bubbly. Let cool slightly before serving.
- Serve: Garnish with parsley and serve warm.
Cook's Tips for Perfect Easy Stuffed Mushroom Casserole
- Best technique: Use a non-stick baking sheet to prevent sticking and ensure even browning.
- Common mistake and fix: If the filling is too wet, drain the mushrooms before filling to avoid sogginess.
- Storage: Store in an airtight container in the fridge for up to 3 days.
- Serving: Let the casserole rest for 5 minutes after baking for cleaner slices.
Storing & Reheating Easy Stuffed Mushroom Casserole
Short-Term Storage
Store in an airtight container in the fridge. Store in a sealed container for up to 3 days. Make-ahead tip: Prepare up to 24 hours in advance and bake just before serving.
Freezing Easy Stuffed Mushroom Casserole
Freeze stuffed mushrooms in an airtight container for up to 2 months.
How to Reheat Without Drying It Out
Oven: Reheat in a 350°F (175°C) oven for 10–15 minutes. Microwave: Reheat in 30-second intervals until warm.
Recipe Notes
- Chef tip: Use extra virgin olive oil for a more flavorful finish.
- Best substitution: Use vegan cheese for a dairy-free version.
- Make-ahead: Fill mushrooms and store in the fridge. Bake just before serving.
- Scaling: Double or triple the recipe for larger gatherings.
- Troubleshooting: If the crust is too dry, add a bit more olive oil to the mixture.
Want to level up this recipe?
Oven thermometer — Ensures accurate oven temperature for perfect cooking → Check price on Amazon
Easy Stuffed Mushroom Casserole
Ingredients
Main Ingredients
- 24 large white mushrooms
- 1 cup grated Parmesan cheese
- 1 cup breadcrumbs
- 2 cloves garlic, minced
- 1/2 cup shredded mozzarella cheese
Seasonings
- Salt and pepper to taste
- 1 teaspoon dried thyme
- 1 teaspoon dried rosemary
- 1/4 cup olive oil
Optional Toppings
- Fresh parsley for garnish
- Extra Parmesan cheese
- Crushed red pepper flakes
Instructions
- Prep: Preheat oven to 375°F (190°C). Clean mushrooms and remove stems. Place in a baking dish.
- Mix: In a bowl, mix Parmesan, breadcrumbs, garlic, thyme, rosemary, and olive oil. Season with salt and pepper.
- Fill: Spoon mixture into mushroom caps. Top with mozzarella cheese.
- Bake: Bake for 20–25 minutes until golden and bubbly. Let cool slightly before serving.
- Serve: Garnish with parsley and serve warm.
Notes
- Chef tip: Use extra virgin olive oil for a more flavorful finish.
- Best substitution: Use vegan cheese for a dairy-free version.
- Make-ahead: Fill mushrooms and store in the fridge. Bake just before serving.
- Scaling: Double or triple the recipe for larger gatherings.
- Troubleshooting: If the crust is too dry, add a bit more olive oil to the mixture.
Storage
- Fridge: Store in a sealed container for up to 3 days.
- Freezer: Freeze stuffed mushrooms in an airtight container for up to 2 months.
- Oven reheat: Reheat in a 350°F (175°C) oven for 10–15 minutes.
- Microwave reheat: Reheat in 30-second intervals until warm.
- Make ahead: Prepare up to 24 hours in advance and bake just before serving.
Nutrition Per Serving
- Calories: 250
- Protein: 12g
- Fat: 12g
- Carbs: 18g
- Fiber: 2g
- Sugar: 1g
- Sodium: 450mg
- Cholesterol: 30mg
- Sat. Fat: 6g
Nutritional values are estimates only. Actual values may vary by brand and portion size.
Easy Stuffed Mushroom Casserole FAQs
Yes, you can fill the mushrooms and store them in the fridge for up to 24 hours. Bake just before serving for best results.
If the mushrooms are not drained properly before filling, they can release moisture during baking. Make sure to pat them dry or use a non-stick baking sheet to absorb excess moisture.
Yes, you can freeze the stuffed mushrooms in an airtight container for up to 2 months. Reheat in the oven at 350°F (175°C) for 15–20 minutes.
If you're allergic to mushrooms, you can use large bell peppers or squash as a substitute. They will absorb the flavors similarly.
Use fresh herbs, quality cheese, and a bit of olive oil for a richer flavor. This homemade version is more flavorful and healthier than restaurant versions.
A Warm Final Note
I can’t wait for you to try Easy Stuffed Mushroom Casserole and see how effortlessly it comes together. When you make it, pop back here and leave a rating or share how it turned out — I love hearing from you!
