Introduction
There's something incredibly comforting about a casserole fresh out of the oven. The warmth, the mingled aromas, and the inviting look of melted cheese make it a beloved dish in many households. Among these comforting meals, the Cheesy Baked Chicken & Mushroom Casserole stands out as a rich and hearty option.
This dish combines tender chicken, earthy mushrooms, and creamy cheese into a delightful medley. It's perfect for a family dinner or even a cozy weekend gathering. The beauty of a casserole is not just in its flavor, but also in its simplicity—everything comes together in one dish, minimizing cleanup while maximizing comfort.
Ingredients
- 3 cups cooked chicken, shredded
Using pre-cooked chicken saves time, allowing the dish to come together quickly. Shredded chicken blends well into the casserole, soaking up the flavors of the sauce. - 2 cups mushrooms, sliced
Mushrooms add a rich umami flavor that complements the chicken beautifully. They also contribute to the dish's moisture, ensuring the casserole stays tender. - 1 cup cream of chicken soup
This staple creates a creamy base for the casserole and enhances the flavors of the other ingredients, creating a rich and satisfying sauce. - 1 cup sour cream
Adding sour cream contributes a tangy flavor while enriching the casserole's texture. It melds with the chicken and mushrooms, adding depth. - 1 ½ cups shredded cheddar cheese
Cheddar cheese is essential for that gooey, melty top layer that binds the casserole together and provides a flavorful finish. - 1 teaspoon garlic powder
Garlic powder adds a subtle depth of flavor, enhancing the overall taste of the casserole without overpowering the other ingredients. - 1 teaspoon onion powder
Onion powder infuses a savory note that enhances the other flavors in the dish, bringing out the natural sweetness of the chicken and mushrooms. - Salt and pepper to taste
Seasoning is crucial in bringing out the flavors of the dish. Adjusting salt and pepper ensures a well-balanced casserole. - 1 cup breadcrumbs (optional)
Breadcrumbs create a crunchy topping that contrasts beautifully with the creamy interior. They add texture and make the dish visually appealing.
Directions & Preparation
Step 1: Preheat your oven to 350°F (175°C).
Preheating the oven ensures that your casserole cooks evenly from the start. An adequately heated oven helps the cheese melt perfectly and gives the casserole a nice golden color.
Step 2: In a large mixing bowl, combine the shredded chicken, sliced mushrooms, cream of chicken soup, sour cream, garlic powder, onion powder, salt, and pepper.
Combining all the ingredients evenly helps distribute flavors throughout the casserole. Ensuring a uniform mixture ensures that every bite has a balanced taste and texture.
Step 3: Transfer the mixture to a greased 9×13 inch baking dish.
Greasing the baking dish prevents the casserole from sticking, making it easier to serve after baking. A larger dish allows for even cooking and helps achieve that coveted golden top.
Step 4: Sprinkle the shredded cheddar cheese evenly over the top of the mixture.
This layer of cheese not only adds to the creamy texture but also forms a delicious golden crust as it bakes. Cheese helps create that appealing, gooey texture that everyone loves in a casserole.
Step 5: If desired, sprinkle breadcrumbs on top of the cheese.
Adding breadcrumbs provides a delightful crunch to the casserole's surface. This contrast in texture can enhance the overall eating experience, making every scoop exciting.
Step 6: Cover the baking dish with aluminum foil and bake for 25 minutes.
Covering the dish allows the casserole to cook evenly and retain moisture. Baking it covered prevents the top from browning too quickly while ensuring the interior is heated through.
Step 7: Remove the foil and bake for another 15 minutes, or until the cheese is bubbly and golden brown.
This step is crucial as it allows the cheese to achieve that desirable golden crust. Monitoring the casserole during this time ensures it doesn't overcook and dry out.
Step 8: Let the casserole cool for a few minutes before serving.
Allowing the casserole to rest helps it set, making it easier to cut into squares. It also gives the flavors time to meld, enhancing the ultimate taste of the dish.

The Perfect Cheese Blend
Choosing the right cheese for your casserole is key to achieving a luscious texture and flavor. While cheddar is a classic choice, consider mixing in mozzarella or Monterey Jack for added creaminess. These cheeses melt beautifully, creating a rich layer on top of your casserole. Furthermore, using a combination of cheeses can bring new flavor dimensions to your dish.
Vegetable Variations
While mushrooms are a beloved addition, don't hesitate to experiment with other vegetables. Spinach, broccoli, or bell peppers can introduce new colors and tastes to your casserole. Each vegetable contributes its unique texture and flavor, enriching the overall dish. Just remember to balance the moisture levels, especially if you’re using watery vegetables to avoid a soggy casserole.
Serving Suggestions
Pair this decadent casserole with a crisp green salad or some roasted vegetables for a well-rounded meal. The freshness of a salad contrasts perfectly with the richness of the casserole, creating a satisfying dining experience. You can also serve it with crusty bread to soak up any delicious sauce left on the plate.
FAQs
Can I use rotisserie chicken in this casserole?
Absolutely! Rotisserie chicken adds convenience and flavor to the dish, making it even easier to prepare.
How can I make this casserole healthier?
You can substitute Greek yogurt for sour cream and include more vegetables to reduce fat while boosting nutrition.
What if my casserole is too dry after baking?
If it turns out dry, consider adding a bit of chicken broth or a drizzle of olive oil before serving to add moisture.
Can I make this casserole in advance?
Yes, you can prepare it and refrigerate it before baking. Just allow an extra 10-15 minutes of bake time if cooking from cold.
How do I prevent my casserole from becoming too soggy?
Ensure that the mushrooms are cooked down if they are fresh, as excess moisture can make the casserole watery.
What variations can I try with the meat?
Feel free to substitute turkey or even a mix of different meats according to your taste preferences.
Conclusion
The Cheesy Baked Chicken & Mushroom Casserole is not just a meal; it’s a warm invitation to gather around the table with loved ones. Its creamy texture and rich flavors make it a family favorite that you'll want to return to time and again.
Bringing together simple ingredients into a dish that feels special doesn't need to be complex. Embrace the comforting goodness of this casserole and enjoy the smiles it brings with every bite.
Recipe Card

Delicious Cheesy Baked Chicken & Mushroom Casserole
Ingredients
Method
- Preheat your oven to 350°F (175°C).
- In a large mixing bowl, combine the shredded chicken, sliced mushrooms, cream of chicken soup, sour cream, garlic powder, onion powder, salt, and pepper.
- Transfer the mixture to a greased 9x13 inch baking dish.
- Sprinkle the shredded cheddar cheese evenly over the top of the mixture.
- If desired, sprinkle breadcrumbs on top of the cheese.
- Cover the baking dish with aluminum foil and bake for 25 minutes.
- Remove the foil and bake for another 15 minutes, or until the cheese is bubbly and golden brown.
- Let the casserole cool for a few minutes before serving.
Notes
Additional serving suggestions: pair with a crisp salad, garlic bread, or roasted seasonal vegetables for balance.
For make-ahead, prep components separately and assemble just before heating to preserve texture.
Taste and adjust with acid (lemon/vinegar) and salt right at the end to wake up flavors.