Cheesy Mushroom Casserole is a delightful dish that evokes warmth and comfort. This creamy keto-friendly casserole is perfect for those who love mushrooms and cheese. The combination of fresh mushrooms, rich cream, and a gooey cheese blend makes it a must-try for dinner. Whether you’re preparing a family meal or hosting friends, this recipe offers a satisfying experience that is both easy to make and delicious.
Why You’ll Love This Cheesy Mushroom Casserole
This Cheesy Mushroom Casserole is more than just a meal—it’s an experience. Here are a few reasons to love it:
- Quick and easy to prepare, perfect for busy weeknights.
- Rich in flavor, thanks to the combination of sautéed mushrooms and cheese.
- Keto-friendly and low in carbs, making it a great choice for health-conscious eaters.
- Can easily be customized with your favorite ingredients.
- Works well as a side dish or a main course.
- Perfect for leftovers, maintaining its deliciousness even after reheating.
This dish can also easily transform into a Vegetarian Cheesy Mushroom Casserole, making it versatile for different dietary preferences. Plus, it fits perfectly into a low-calorie diet.
Ingredients for Cheesy Mushroom Casserole
Gather these items:
- 8 cups Fresh mushrooms (sliced)
- 2 tablespoons Butter (or olive oil for dairy-free)
- 1 cup Sweet onions (finely chopped; shallots can be used)
- 2 cups Cheese (blend of cheddar or mozzarella)
- 1 cup Heavy cream (or coconut cream for dairy-free)
- Spices/Salt (to taste)
- Breadcrumbs (for crispy texture)
- Crushed Pork Rinds (for a keto-friendly option)
How to Make Cheesy Mushroom Casserole Step-by-Step
- Step 1: Preheat your oven to 350°F (175°C).
- Step 2: Melt butter in a skillet over medium heat, add onions, and sauté until translucent for about 4-5 minutes.
- Step 3: Add sliced mushrooms to the skillet and sauté for another 6-8 minutes until tender and browned.
- Step 4: In a mixing bowl, combine mushroom mixture with cheese, heavy cream, and spices. Mix well.
- Step 5: Pour the mixture into a greased 9×13-inch baking dish and spread evenly.
- Step 6: Bake in the preheated oven for about 30 minutes until golden and bubbly.
- Step 7: Let cool for 5-10 minutes before serving.
Pro Tips for the Best Cheesy Mushroom Casserole
Keep these in mind:
- Use a mix of your favorite cheeses for varied flavor.
- For added crunch, sprinkle extra breadcrumbs on top before baking.
- Let the casserole sit for a few minutes before serving to help it set.

Best Ways to Serve Cheesy Mushroom Casserole
This Cheesy Mushroom Dish pairs wonderfully with:
- Steamed vegetables for a healthy side.
- Garlic bread to soak up the creamy goodness.
- A fresh garden salad for a light contrast.
How to Store and Reheat Cheesy Mushroom Casserole
To store, cover your Mushroom Cheese Casserole tightly with plastic wrap or aluminum foil. It can be kept in the refrigerator for up to 3 days. When reheating, simply place in a preheated oven at 350°F (175°C) until warmed through. This dish also freezes well if you want to prepare it ahead of time!
Frequently Asked Questions About Cheesy Mushroom Casserole
What’s the secret to perfect Cheesy Mushroom Casserole?
The secret lies in sautéing the mushrooms and onions until they are caramelized to enhance their flavors. Also, using a blend of cheeses elevates the taste.
Can I make Cheesy Mushroom Casserole ahead of time?
Yes! You can prepare it a day in advance, cover it, and refrigerate. Just bake it when you’re ready to serve!
How do I avoid common mistakes with Cheesy Mushroom Casserole?
Make sure not to overcook the mushrooms; they should be tender but not mushy. Also, avoid adding too much liquid to prevent a watery consistency.
Variations of Cheesy Mushroom Casserole You Can Try
Here are some delicious variations:
- For a Cheesy Mushroom Casserole with spinach, add fresh spinach to the mushroom mixture.
- Try a Cheesy Mushroom casserole with pasta for a heartier meal.
- For a gluten-free option, use crushed pork rinds instead of breadcrumbs.
For more tips on cooking with mushrooms, check out this helpful guide. If you’re interested in more recipes, visit this page for inspiration. You can also learn about healthy cooking techniques that can enhance your meals.
Print
Delicious Cheesy Mushroom Casserole for Comfort Food Lovers
- Total Time: 55 minutes
- Yield: 6 servings 1x
- Diet: Low Calorie
Description
Experience the comforting flavors of Cheesy Mushroom Casserole, a keto-friendly dish that’s easy to prepare and perfect for dinner.
Ingredients
- 8 cups Fresh mushrooms (sliced)
- 2 tablespoons Butter (or olive oil for dairy-free)
- 1 cup Sweet onions (finely chopped; shallots can be used)
- 2 cups Cheese (blend of cheddar or mozzarella)
- 1 cup Heavy cream (or coconut cream for dairy-free)
- Spices/Salt (to taste)
- Breadcrumbs (for crispy texture)
- Crushed Pork Rinds (for a keto-friendly option)
Instructions
- Preheat your oven to 350°F (175°C).
- Melt butter in a skillet over medium heat, add onions, and sauté until translucent for about 4-5 minutes.
- Add sliced mushrooms to the skillet and sauté for another 6-8 minutes until tender and browned.
- In a mixing bowl, combine mushroom mixture with cheese, heavy cream, and spices. Mix well.
- Pour the mixture into a greased 9×13-inch baking dish and spread evenly.
- Bake in the preheated oven for about 30 minutes until golden and bubbly.
- Let cool for 5-10 minutes before serving.
Notes
- Prep Time: 25 minutes
- Cook Time: 30 minutes
- Category: Main Dish
- Method: Baking
- Cuisine: Keto
Nutrition
- Serving Size: 1 cup
- Calories: 350
- Sugar: 2 g
- Sodium: 400 mg
- Fat: 30 g
- Saturated Fat: 15 g
- Unsaturated Fat: 10 g
- Trans Fat: 0 g
- Carbohydrates: 7 g
- Fiber: 1 g
- Protein: 15 g
- Cholesterol: 80 mg
Keywords: Cheesy Mushroom Casserole