Baked Cheesy Mushrooms Delight

Category: Perfect Pairings & Anytime Bites

This warm casserole combines tender mushrooms with a creamy blend of cheddar, mozzarella, cream cheese, and sour cream. The mixture is layered in a butter-greased dish and topped with a golden, crispy breadcrumb crust. A touch of garlic and onion adds depth, while baking brings everything together into a comforting, savory dish. Perfect as a satisfying side or light main, this dish highlights rich cheese flavors balanced by earthy mushrooms and a crunchy finish.

Breanna smiling at the camera.
Created By Breanna
Last updated on Mon, 10 Nov 2025 17:28:40 GMT
A baked cheesy mushroom casserole in a white bowl. Save
A baked cheesy mushroom casserole in a white bowl. | foodiffy.com

This baked cheesy mushrooms casserole is a cozy dish that comes together easily for a satisfying weeknight dinner or a comforting side. With creamy cheeses melding into tender mushrooms and a crispy breadcrumb topping, it’s a dish that feels special but uses simple ingredients you likely already have on hand.

I made this after craving something warm and cheesy and it quickly became a favorite in our house for those chilly evenings.

Ingredients

  • Button mushrooms: provide an earthy, meaty texture aim for firm and white mushrooms for best flavor
  • Cheddar cheese: offers a sharp, tangy bite fresh aging means fuller taste
  • Mozzarella cheese: melts smoothly adding that stretchy gooeyness
  • Cream cheese: gives the casserole a thick, creamy base softened to blend easily
  • Sour cream: adds a slight tang to balance richness choose full fat for best texture
  • Onion: brings sweetness and depth finely chopped for even cooking
  • Garlic: adds a punch of aromatic flavor minced fresh to avoid bitterness
  • Bread crumbs: create a crunchy topping use fresh or panko crumbs for extra crunch
  • Unsalted butter: is for greasing and adds richness use high quality or European style for best flavor
  • Salt and pepper: to season adjust to taste enhancing all other flavors

Instructions

Prepare The Cheese Mixture:
In a large bowl combine softened cream cheese and sour cream until smooth. Add grated cheddar and mozzarella then season with salt and pepper. Mix thoroughly ensuring the cheeses are evenly incorporated forming a creamy blend.
Sauté The Vegetables:
Heat a skillet over medium heat and melt a tablespoon of butter. Add finely chopped onion and cook for about 5 minutes until translucent and fragrant stirring occasionally. Add minced garlic and cook for another minute being careful not to burn the garlic. Toss in the sliced mushrooms and cook until they release moisture and soften around 8 to 10 minutes stirring frequently. Season with salt and pepper to taste. Optionally add a splash of white wine at this stage to deepen flavor and cook until liquid mostly evaporates.
Assemble The Casserole:
Preheat your oven to 180°C (350°F). Butter a medium baking dish thoroughly. Spread the cooked mushroom mixture evenly across the base. Dollop and spread the cheese mixture evenly over the mushrooms creating a smooth top layer. Sprinkle the bread crumbs evenly to cover. Dot the surface with remaining butter or drizzle a little olive oil to encourage browning.
Bake Until Golden:
Place the casserole in the oven and bake for 25 to 30 minutes or until the top is golden brown and bubbling. Let rest for 5 minutes before serving to allow it to set slightly making it easier to portion.
A baked cheesy mushroom casserole in a white bowl.
A baked cheesy mushroom casserole in a white bowl. | foodiffy.com

Cheddar is my favorite ingredient because it gives this dish that nostalgic sharpness reminding me of family gatherings where cheese dishes always stole the show. This casserole feels like a warm hug on a plate for me.

Storage Tips

Store leftovers in an airtight container in the fridge for up to three days. Reheat in the oven at 160°C until warmed through to preserve texture. Avoid microwaving as it can make the topping soggy but in a pinch cover loosely with a paper towel first.

Ingredient Swaps

Try cremini or portobello mushrooms for deeper earthiness. Greek yogurt can replace sour cream for a lighter tang and fewer calories. Nutritional yeast can add extra cheesiness if you want to lighten dairy content.

Serving Ideas

Serve with a simple crisp green salad for freshness or alongside roasted potatoes for a heartier meal. This casserole also pairs nicely with a crusty baguette to soak up the creamy sauce.

A baked cheesy mushroom casserole in a white bowl.
A baked cheesy mushroom casserole in a white bowl. | foodiffy.com

Use cheeses that melt well to avoid grainy textures and always soften your cream cheese beforehand for smooth mixing.

Frequently Asked Recipe Questions

→ Can I use different mushroom types?

Absolutely! Mixing varieties like cremini, shiitake, or portobello can add a richer flavor and varied texture to the dish.

→ How do I keep the topping crispy?

Using panko breadcrumbs instead of regular crumbs helps create a crispier golden crust when baked.

→ Is there a way to add more depth to the mushrooms?

Sautéing the mushrooms with a splash of white wine before baking enhances their earthiness and layers more flavor.

→ Can I prepare this dish ahead of time?

Yes, you can assemble it in advance and refrigerate. Bake it just before serving to maintain the crispy topping.

→ What cheese combinations work best?

A mix of sharp cheddar, mild mozzarella, and creamy cheeses like cream cheese or sour cream creates a luscious, balanced sauce.

Baked Cheesy Mushrooms Casserole

Savory mushrooms baked with creamy cheese sauce and a crunchy breadcrumb topping.

Preparation Time
20 mins
Time to Cook
30 mins
Overall Time
50 mins
Created By: Breanna

Type of Recipe: Sides & Snacks

Cooking Difficulty: Suitable for Beginners

Cultural Origin: Western

Portion Size: 6 Number of Servings

Dietary Options: Good for Vegetarians

Ingredients Required

→ Mushrooms

01 500 grams button mushrooms, cleaned and sliced

→ Cheeses

02 240 milliliters cheddar cheese, grated
03 120 milliliters mozzarella cheese, grated
04 120 milliliters cream cheese, softened
05 120 milliliters sour cream

→ Aromatics

06 1 medium onion, finely chopped
07 2 cloves garlic, minced

→ Topping

08 120 milliliters bread crumbs
09 30 grams unsalted butter

→ Seasonings

10 Salt, to taste
11 Black pepper, to taste

Guide to Cooking

Step 01

In a large bowl, combine softened cream cheese and sour cream, then incorporate grated cheddar and mozzarella. Season with salt and pepper, mixing thoroughly until smooth.

Step 02

Preheat oven to 180 degrees Celsius. Grease a suitable baking dish evenly with unsalted butter.

Step 03

Spread the cleaned and sliced mushrooms uniformly across the base of the prepared baking dish.

Step 04

Evenly distribute the cheese mixture over the mushrooms, ensuring full coverage.

Step 05

Sprinkle the bread crumbs evenly over the cheese layer to create a crispy topping during baking.

Step 06

Place the dish in the preheated oven and bake for 30 minutes, or until the top is golden and bubbly.

Extra Suggestions

  1. For enhanced flavor, consider using a variety of mushroom types and deglaze the pan with white wine during sautéing. Panko breadcrumbs yield a crispier crust.

Necessary Equipment

  • Oven
  • Large mixing bowl
  • Baking dish
  • Measuring cups and spoons

Allergen Info

Always check ingredient labels for allergens, and talk to a health expert if you’re unsure.
  • Contains dairy; may not be suitable for lactose-intolerant individuals.
  • Contains gluten due to bread crumbs.

Nutritional Info (Per Serving)

Nutrition facts are for general information and shouldn’t replace professional health advice.
  • Energy (Calories): 350
  • Fats: 22 g
  • Carbohydrates: 20 g
  • Protein: 18 g