Baked Cheesy Mushrooms Casserole Recipe

Savory Baked Cheesy Mushrooms Casserole Recipe for Dinner Joy

Cheesy mushrooms casserole offers a delightful journey through rich, earthy flavors that dance across your palate.

Imagine a warm, comforting dish that blends savory ingredients into a creamy, irresistible experience.

mushrooms bring depth and complexity to this classic comfort food.

Cheese creates a golden, melted blanket that enhances simple ingredients into something extraordinary.

Hearty and satisfying, this casserole promises a delectable meal that feels both rustic and elegant.

Each forkful promises a symphony of textures and tastes that will leave you craving more.

You can want to gather everyone around the table for this mouthwatering culinary adventure.

Explore this recipe and let your taste buds celebrate a truly memorable dining moment.

How to Bake the Ultimate Cheesy Mushroom Casserole

How to Bake the Ultimate Cheesy Mushroom Casserole

Step 1: Prepare the Oven and Baking Dish

Warm up your oven to a cozy 375°F (190°C). Grab a 9×13-inch baking dish and give it a light coating of cooking spray or butter to keep everything from sticking.

Step 2: Season the Mushrooms

In a large mixing bowl, toss together:
  • Sliced mushrooms
  • Olive oil
  • Garlic powder
  • Dried thyme
  • Salt
  • Black pepper

Massage the seasonings into the mushrooms until they’re completely coated with flavor.

Step 3: Create the Mushroom Base

Spread the seasoned mushrooms in an even layer across the bottom of your prepared baking dish. They should create a delicious foundation for the casserole.

Step 4: Layer the Cheese

Sprinkle a generous blanket of cheeses over the mushrooms:
  • Shredded cheddar cheese
  • Grated Parmesan cheese

Make sure the cheese covers every inch of the mushroom layer.

Step 5: Add the Creamy Sauce

Gently pour heavy cream over the cheese and mushrooms. This will transform into a luxurious, velvety sauce during baking.

Step 6: Prepare the Crispy Topping

In a separate bowl, mix:
  • Melted butter
  • Breadcrumbs

Stir until the breadcrumbs are completely coated and look like golden sand. Sprinkle this mixture evenly across the top of the casserole.

Step 7: Bake to Perfection

Slide the baking dish into the preheated oven. Bake for 25-30 minutes until the top turns a beautiful golden brown and the sauce starts bubbling around the edges.

Step 8: Create an Extra Crispy Finish

For those who love a super crunchy top, switch your oven to broil. Pop the casserole back in for 2-3 minutes. Keep a close eye to prevent burning – this step happens quickly!

Step 9: Serve and Garnish

Let the casserole rest for a few minutes to settle. Sprinkle freshly chopped parsley on top for a pop of color and fresh flavor.

Pro Tips for Mushroom Casserole Greatness

Pro Tips for Mushroom Casserole Greatness
  • Select Mushroom Freshness: Choose firm, unblemished mushrooms with smooth caps to ensure the best texture and flavor in your casserole.
  • Layer Cheese Strategically: Grate cheeses fresh and distribute evenly for a more uniform melting and balanced taste throughout the dish.
  • Control Moisture Carefully: Pat mushrooms dry before seasoning to prevent excess liquid that could make the casserole soggy and compromise the crispy breadcrumb topping.
  • Boost Breadcrumb Crunch: Toast breadcrumbs slightly before adding to the casserole to enhance their golden color and provide an extra crispy texture.
  • Monitor Broiling Closely: Keep a close eye during the final broiling stage, as just seconds can transform a perfect golden topping into a burnt disaster.

How to Keep Your Casserole Fresh for Later

How to Keep Your Casserole Fresh for Later
  • Refrigerate: Store leftover cheesy mushroom casserole in an airtight container for up to 3-4 days in the refrigerator. Cool completely before sealing to prevent condensation.
  • Reheat Oven Method: Preheat oven to 350°F, cover casserole with foil to prevent drying, and warm for 15-20 minutes until heated through. Remove foil in the last 5 minutes to crisp the topping.
  • Microwave Option: Reheat individual portions on medium power for 1-2 minutes, stirring halfway through to ensure even heating. Add a splash of cream to maintain moisture and restore the creamy texture.

What to Serve Alongside Mushroom Casserole

  • Pair with Robust Red Wine: Select a medium-bodied Pinot Noir or Merlot that complements the earthy mushroom flavors and cuts through the rich, creamy cheese.
  • Match with Herbal Salad Side: Create a light mixed green salad with fresh herbs like basil and arugula, dressed in a tangy vinaigrette to balance the casserole's decadent texture.
  • Serve with Crusty Bread: Grab a warm, rustic sourdough or French baguette to soak up the creamy sauce and add a delightful textural contrast to the cheesy mushroom dish.
  • Complement with Crisp White Wine: An unoaked Chardonnay or Sauvignon Blanc provides a refreshing acidic counterpoint to the heavy, cheesy casserole, cleansing the palate between bites.

Fun Variations on Mushroom Casserole to Try

Fun Variations on Mushroom Casserole to Try
  • Spicy Mushroom Pepper Blast: Replace thyme with red pepper flakes and add diced jalapeños for a fiery kick. Mix in pepper jack cheese to enhance the heat and create a zesty flavor profile.
  • Mediterranean Herb Garden: Swap cheddar with crumbled feta cheese and incorporate fresh oregano, basil, and rosemary. Sprinkle sun-dried tomatoes and kalamata olives for an authentic Mediterranean essence.
  • Smoky Bacon Fusion: Crisp chopped bacon before mixing with mushrooms and scatter it throughout the casserole. Use smoked gouda instead of cheddar for an extra layer of rich, smoky flavor. Garnish with green onions for added freshness.
  • Vegetarian Protein Power: Replace heavy cream with coconut milk and add cooked quinoa or lentils for extra protein. Mix in nutritional yeast for a cheesy undertone and use plant-based breadcrumbs to maintain the casserole's crispy texture.

Mushrooms + Cheese = Questions? We’ve Got Answers

  • Can I use different types of mushrooms?

Yes! You can mix varieties like button, cremini, or shiitake for more depth of flavor. Just ensure they’re sliced to similar thickness for even cooking.

  • How do I store leftover cheesy mushroom casserole?

Refrigerate in an airtight container for up to 3 days. Reheat in the oven at 350°F to maintain the crispy breadcrumb topping and prevent sogginess.

  • Is this recipe vegetarian?

It contains cheese and heavy cream, so it’s vegetarian but not vegan. For a vegetarian version, use all vegetarian-friendly ingredients and check your cheese sources.

  • Can I make this dish ahead of time?

Absolutely! Prepare the casserole up to the point of baking, cover, and refrigerate for up to 24 hours. When ready to serve, bake as directed, adding a few extra minutes to the cooking time.

Baked Cheesy Mushroom Casserole: Creamy, Cozy, Delicious

Baked Cheesy Mushroom Casserole: Creamy, Cozy, Delicious
  • This casserole transforms simple mushrooms into a luxurious, velvety dish that wraps you in warm, cheesy goodness with minimal kitchen effort.
  • Prepare this restaurant-quality side in under 45 minutes, using basic ingredients and straightforward techniques that make you look like a professional chef.
  • Experience a delightful contrast between crispy golden breadcrumb topping, tender mushrooms, and silky melted cheese that creates an irresistible mouthfeel in every single bite.
  • Equally impressive as a holiday side dish or weeknight dinner companion, this recipe adapts seamlessly to different meal settings while satisfying diverse taste preferences.

Ingredients for Baked Cheesy Mushroom Casserole

Main Ingredients:

Mushrooms:
  • Sliced Mushrooms: A hearty base for the casserole, providing earthy flavor and meaty texture. White button or cremini mushrooms work best for consistent results.
Cheese:
  • Shredded Cheddar Cheese, Grated Parmesan Cheese: Create a rich, melty topping with deep, sharp flavors. Sharp cheddar adds more robust taste.
Seasoning and Flavoring:
  • Olive Oil: Helps coat mushrooms and enhances overall moisture. Extra virgin olive oil provides better flavor.
  • Garlic Powder: Adds aromatic depth without fresh garlic chunks.
  • Dried Thyme: Brings subtle herbal notes that complement mushrooms.
  • Salt, Black Pepper: Essential for balancing and enhancing overall taste.
Binding and Topping Ingredients:
  • Heavy Cream: Creates a luxurious, creamy sauce that binds the casserole.
  • Melted Butter: Helps toast breadcrumbs and adds richness.
  • Breadcrumbs: Provides crispy, golden topping with delightful crunch.
  • Fresh Parsley: Offers bright garnish and fresh herb accent.
Print
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Baked Cheesy Mushrooms Casserole Recipe

Baked Cheesy Mushrooms Casserole Recipe


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4.5 from 38 reviews

  • Total Time: 40 minutes
  • Yield: 4 1x

Description

Cheesy mushroom casserole delivers comfort and warmth with incredible depth of earthy flavors and rich, creamy textures. Hearty ingredients blend perfectly, creating a soul-satisfying dish you’ll crave again and again.


Ingredients

Scale

Main Ingredients:

  • 1 lb (454 g) button mushrooms (sliced)
  • 1 cup (240 ml) heavy cream
  • 1 cup (100 g) shredded cheddar cheese
  • ½ cup (50 g) grated Parmesan cheese

Seasoning Ingredients:

  • 1 tablespoon olive oil
  • 1 teaspoon garlic powder
  • 1 teaspoon dried thyme
  • ½ teaspoon salt
  • ¼ teaspoon black pepper

Topping Ingredients:

  • ½ cup (60 g) breadcrumbs
  • 2 tablespoons unsalted butter (melted)
  • 1 fresh parsley (chopped)

Instructions

  1. Prepare the oven environment by heating to 375°F (190°C) and coating a 9×13-inch baking dish with light grease to ensure easy serving and cleanup.
  2. Create a flavor base by massaging sliced mushrooms with olive oil, garlic powder, thyme, salt, and pepper, ensuring each mushroom slice absorbs the aromatic seasonings thoroughly.
  3. Distribute the seasoned mushroom mixture uniformly across the baking dish, establishing an even foundation for the casserole.
  4. Craft a decadent cheese layer by generously sprinkling shredded cheddar and grated Parmesan across the mushroom surface, creating a rich and melty coverage.
  5. Enhance the dish’s creaminess by gently cascading heavy cream over the cheese and mushrooms, which will transform into a luxurious sauce during baking.
  6. Develop a crunchy topping by blending melted butter with breadcrumbs until thoroughly incorporated, then delicately scatter the mixture across the casserole’s surface.
  7. Transfer the dish to the preheated oven and bake for 25-30 minutes, monitoring until the top achieves a golden-brown hue and the edges bubble with creamy anticipation.
  8. Elevate the texture by executing a quick broil for 2-3 minutes, creating an extra-crisp crown while maintaining vigilance to prevent burning.
  9. Allow the casserole a brief resting period to settle, then adorn with freshly chopped parsley for a vibrant, herbaceous finish before presenting to eager diners.

Notes

  • Choose fresh, firm mushrooms for the best texture and flavor in this creamy casserole.
  • Grate cheese fresh for maximum melting and a richer, more intense cheesy taste.
  • Always coat mushrooms thoroughly with seasonings to ensure deep, even flavor throughout the dish.
  • Use unsalted butter to control salt levels and prevent the casserole from becoming too salty.
  • Broiling adds a delightful golden-brown crispiness to the breadcrumb topping, transforming the dish from good to extraordinary.
  • For a lighter version, substitute heavy cream with half-and-half or whole milk, though the sauce will be less rich.
  • Prep Time: 10 minutes
  • Cook Time: 30 minutes
  • Category: Dinner, Appetizer, Snacks
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 4
  • Calories: 360
  • Sugar: 2 g
  • Sodium: 580 mg
  • Fat: 30 g
  • Saturated Fat: 18 g
  • Unsaturated Fat: 10 g
  • Trans Fat: 1 g
  • Carbohydrates: 12 g
  • Fiber: 1 g
  • Protein: 13 g
  • Cholesterol: 90 mg
Isabella Rossi

Isabella Rossi

Founder & Culinary Content Creator

Expertise

Recipe Development​, Traditional Irish and European Cuisines, Food Styling and Photography, Culinary Education​

Education

Dublin Institute of Technology (DIT) – School of Culinary Arts and Food Technology

  • Degree: Bachelor of Arts in Culinary Arts
  • Focus: Comprehensive training in classical and modern cooking techniques, kitchen management, and menu development.​

Ballymaloe Cookery School

  • Program: 12-Week Certificate Course
  • Focus: Intensive, hands-on experience emphasizing farm-to-table cooking and sustainable practices.​

Liam is the voice behind many of Craft Meats’ most flavorful features. With roots in Dublin’s smoky barbecue scene and a culinary degree from the Dublin Institute of Technology, he brings time-tested cooking techniques to life. 

His training at Ballymaloe Cookery School sharpened his farm-to-table approach, giving him a deep respect for every ingredient he writes about.

He’s not about overcomplicating the process, just helping you cook meat that’s worth talking about. When he’s not writing or grilling, he’s out foraging or nerding out on regional spice blends to add to his next recipe.

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