Comfort Classics

Chicken And Mushroom Casserole

Name: Chicken And Mushroom Casserole
Prep time: 20 min
Cook time: 30 min
Total time: 50 min
Yield: 6 servings
Ingredients: 1 lb (450g) chicken thighs, boneless; 2 cups mixed mushrooms, sliced; 2 tablespoons olive oil; 1 onion, diced; 3 cloves garlic, minced; 1 cup chicken broth; 1/2 cup heavy cream; 1 teaspoon Dijon mustard; 1 cup grated cheddar cheese; 1/2 cup breadcrumbs; Salt and pepper to taste

By Willa Rutherford · June 19, 2026 · Comfort Classics

Prep20 min

Cook30 min

Total50 min

Serves6

Chicken And Mushroom Casserole — Golden, bubbly, and utterly irresistible

There's something special about a warm, comforting casserole on a chilly evening. As a Midwesterner at heart, I grew up on these kinds of dishes, and my Chicken And Mushroom Casserole is a staple in our household. It's the perfect combination of tender chicken, earthy mushrooms, and a crispy golden crust that's sure to become a family favorite.

I remember my grandmother making a similar casserole for our family gatherings, and the aroma that filled the house was always incredible. She'd spend hours in the kitchen, carefully preparing each ingredient and layering them to perfection. And when it was finally time to take it out of the oven, the waiting was always worth it.

This recipe is a bit of a twist on my grandmother's classic, with a few modern touches and some added flair. But the core idea remains the same: to create a dish that's both comforting and impressive, perfect for a weeknight dinner or a special occasion.

One of the things I love about this recipe is its versatility. You can easily customize it to suit your tastes, adding different spices or herbs to give it a unique flavor. And because it's a one-dish wonder, cleanup is a breeze – just toss the dish in the oven and let it do its magic.

So if you're looking for a recipe that's sure to become a staple in your household, look no further. My Chicken And Mushroom Casserole is a tried-and-true favorite that's sure to please even the pickiest of eaters. And with its easy-to-follow instructions and simple ingredients, you'll be enjoying a delicious homemade meal in no time.

Why You’ll Love This Recipe

This recipe is incredibly easy to make, with simple ingredients and straightforward instructions.
It's a one-dish wonder, making cleanup a breeze and reducing waste.
The dish is highly customizable, allowing you to add your own unique twists and flavors.
It's perfect for a weeknight dinner or a special occasion, and can be made ahead of time for added convenience.
The combination of chicken, mushrooms, and creamy sauce is a match made in heaven, and is sure to please even the pickiest of eaters.
The crispy golden crust adds a satisfying crunch to the dish, and helps to balance out the richness of the sauce and the chicken.

Why This Recipe Works

The key to a great casserole is all about the layers. You want to create a harmonious balance of flavors and textures, with each component complementing the others. In this recipe, we start with a base of tender chicken and earthy mushrooms, which provide a rich and savory foundation.

Next, we add a layer of creamy sauce, made with a combination of chicken broth, heavy cream, and a touch of Dijon mustard. This sauce helps to bind the dish together, adding moisture and flavor to each bite.

Finally, we top it all off with a crispy golden crust, made from a mixture of breadcrumbs, grated cheese, and a sprinkle of paprika. This adds a satisfying crunch to the dish, and helps to balance out the richness of the sauce and the chicken.

By layering these components in a specific order, we create a dish that's both cohesive and exciting. Each bite is a perfect balance of flavors and textures, with the chicken, mushrooms, sauce, and crust all working together in harmony.

Ingredients You’ll Need

When it comes to making a great casserole, the ingredients are everything. You want to choose components that are not only delicious on their own, but also work well together. For this recipe, we'll be using a combination of tender chicken, earthy mushrooms, and a variety of aromatics to create a rich and savory flavor profile.

Be sure to select high-quality ingredients, such as fresh mushrooms and real cheese, to get the best flavor out of your dish. And don't be afraid to get creative and add your own unique twists – this recipe is highly customizable, so feel free to experiment and make it your own!

1 lb (450g) chicken thighs, bonelessI like to use boneless chicken thighs for this recipe, as they're easy to cook and provide a tender texture. You can also use bone-in thighs if you prefer, just be sure to adjust the cooking time accordingly.
2 cups mixed mushrooms, slicedA combination of cremini, shiitake, and button mushrooms works well for this recipe, but feel free to use your favorite varieties. Be sure to slice them thinly so they cook evenly.
2 tablespoons olive oilOlive oil is a great choice for this recipe, as it adds a rich and fruity flavor to the dish. You can also use other oils, such as avocado or grapeseed, if you prefer.
1 onion, dicedA sweet onion, such as Vidalia or Maui, works well for this recipe. Be sure to dice it finely so it cooks evenly and adds a depth of flavor to the dish.
3 cloves garlic, mincedGarlic is a key component of this recipe, adding a pungent flavor and aroma to the dish. Be sure to mince it finely so it distributes evenly throughout the casserole.
1 cup chicken brothLow-sodium chicken broth is a good choice for this recipe, as it adds moisture and flavor without overpowering the other ingredients. You can also use homemade broth if you prefer.
1/2 cup heavy creamHeavy cream adds a rich and creamy texture to the sauce, and helps to balance out the flavors. You can also use half-and-half or whole milk if you prefer a lighter sauce.
1 teaspoon Dijon mustardDijon mustard adds a tangy and slightly sweet flavor to the sauce, and helps to balance out the richness of the cream and the chicken. You can also use other types of mustard, such as whole-grain or honey mustard, if you prefer.
1 cup grated cheddar cheeseA sharp cheddar cheese works well for this recipe, as it adds a rich and tangy flavor to the dish. You can also use other types of cheese, such as mozzarella or Parmesan, if you prefer.
1/2 cup breadcrumbsPanko breadcrumbs are a good choice for this recipe, as they add a light and crispy texture to the crust. You can also use other types of breadcrumbs, such as whole-wheat or gluten-free, if you prefer.
Salt and pepper to tasteBe sure to season the dish liberally with salt and pepper, as this will help to bring out the flavors of the other ingredients. You can also add other seasonings, such as dried herbs or spices, if you prefer.

Ingredients for Chicken And Mushroom Casserole

Equipment You’ll Need

Large heavy skillet or Dutch ovenSharp chef's knifeCutting boardMeasuring cups and spoonsInstant-read thermometer9x13-inch baking dish

How to Make Chicken And Mushroom Casserole

1
Preheat your oven to 375 F (190 C).
2
In a large skillet or Dutch oven, heat the olive oil over medium-high heat. Add the sliced mushrooms and cook until they're tender and lightly browned, about 5-7 minutes.
3
Add the diced onion to the skillet and cook until it's translucent and starting to caramelize, about 5-7 minutes.
4
Add the minced garlic to the skillet and cook for 1-2 minutes, until fragrant.
5
Add the chicken to the skillet and cook until it's browned on all sides and cooked through, about 5-7 minutes.
6
In a separate bowl, whisk together the chicken broth, heavy cream, and Dijon mustard. Pour the sauce over the chicken and mushrooms in the skillet, and stir to combine.
7
Transfer the skillet contents to a 9x13-inch baking dish, and top with the grated cheddar cheese and breadcrumbs.
8
Bake the casserole in the preheated oven for 25-30 minutes, until the cheese is melted and bubbly and the crust is golden brown.
9
Remove the casserole from the oven and let it rest for 10-15 minutes before serving. This will help the sauce to thicken and the flavors to meld together.
10
To check for doneness, insert an instant-read thermometer into the thickest part of the chicken. The internal temperature should reach 165 F (74 C).
11
Slice the casserole into individual portions and serve hot, garnished with chopped fresh herbs or a sprinkle of paprika if desired.

Expert Tips

Be sure to use high-quality ingredients, such as fresh mushrooms and real cheese, to get the best flavor out of your dish.
Don't overcrowd the skillet when cooking the chicken and mushrooms, as this can affect the texture and flavor of the final dish.
Let the casserole rest for at least 10-15 minutes before serving, as this will help the sauce to thicken and the flavors to meld together.
Consider adding other ingredients to the casserole, such as diced bell peppers or chopped spinach, to add more flavor and nutrition.
If you're looking for a crispy crust, be sure to bake the casserole uncovered for the last 10-15 minutes of cooking time.
Leftovers can be refrigerated for up to 3-4 days, or frozen for up to 2-3 months. Reheat the casserole in the oven or microwave until hot and bubbly.

Common Mistakes to Avoid

Not cooking the chicken to a safe internal temperature, which can lead to foodborne illness.
Overcrowding the skillet, which can affect the texture and flavor of the final dish.
Not letting the casserole rest before serving, which can result in a sauce that's too thin or a crust that's not crispy.
Using low-quality ingredients, such as canned mushrooms or processed cheese, which can affect the flavor and texture of the final dish.
Not adjusting the cooking time or temperature, which can result in a casserole that's overcooked or undercooked.
Not seasoning the dish liberally with salt and pepper, which can result in a flavor that's bland or uninspired.

Variations and Substitutions

Add some heat to the casserole by incorporating diced jalapenos or red pepper flakes.
Use different types of cheese, such as mozzarella or Parmesan, to add more flavor and variety.
Add some freshness to the dish by incorporating chopped fresh herbs, such as parsley or thyme.
Use leftover chicken or turkey to make the casserole, which can be a great way to reduce food waste and save time.
Add some crunch to the casserole by incorporating chopped nuts or seeds, such as almonds or pumpkin seeds.
Use gluten-free breadcrumbs or gluten-free flour to make the casserole more accessible to those with dietary restrictions.

What to Serve With Chicken And Mushroom Casserole

This casserole is perfect for serving with a variety of sides, such as mashed potatoes, roasted vegetables, or a simple green salad. You can also serve it with some crusty bread or over rice or noodles.

Some other ideas for serving this casserole include: serving it at a family gathering or potluck, pairing it with a glass of wine or a cold beer, or using it as a main dish for a special occasion.

Mashed potatoesRoasted vegetablesSimple green saladCrusty breadRice or noodles

Make-Ahead, Storage, Freezing and Reheating

This casserole can be stored in the refrigerator for up to 3-4 days, or frozen for up to 2-3 months. To reheat, simply place the casserole in the oven or microwave until hot and bubbly.

When storing the casserole, be sure to cover it with plastic wrap or aluminum foil to prevent drying out. You can also add a layer of parchment paper or wax paper to prevent the casserole from sticking to the container.

If you're looking to make the casserole ahead of time, you can prepare the ingredients and assemble the dish up to a day in advance. Simply store it in the refrigerator overnight and bake it in the morning.

When reheating the casserole, be sure to check the internal temperature to ensure that it reaches a safe minimum of 165 F (74 C). You can also add a little bit of water or broth to the casserole if it seems dry or overcooked.

Frequently Asked Questions

What type of mushrooms should I use for this recipe?

A combination of cremini, shiitake, and button mushrooms works well for this recipe, but feel free to use your favorite varieties. Be sure to slice them thinly so they cook evenly.

Can I use leftover chicken or turkey for this recipe?

Yes, you can use leftover chicken or turkey to make this casserole. Simply shred or chop the cooked meat and add it to the skillet with the mushrooms and sauce.

How do I prevent the crust from becoming too brown or burnt?

To prevent the crust from becoming too brown or burnt, be sure to cover the casserole with foil for the first 20-25 minutes of baking time. You can also reduce the oven temperature to 350 F (180 C) if you're concerned about the crust becoming too dark.

Can I make this casserole ahead of time?

Yes, you can make this casserole ahead of time. Simply prepare the ingredients and assemble the dish up to a day in advance, then store it in the refrigerator overnight and bake it in the morning.

How do I reheat the casserole without drying it out?

To reheat the casserole without drying it out, be sure to add a little bit of water or broth to the dish if it seems dry or overcooked. You can also cover the casserole with foil to prevent it from drying out in the oven or microwave.

Can I freeze this casserole?

Yes, you can freeze this casserole. Simply assemble the dish and freeze it before baking. When you're ready to serve, thaw the casserole overnight in the refrigerator and bake it in the oven until hot and bubbly.

What type of cheese is best for this recipe?

A sharp cheddar cheese works well for this recipe, but you can also use other types of cheese, such as mozzarella or Parmesan. Be sure to grate the cheese finely so it melts evenly and adds a smooth texture to the sauce.

Can I make this casserole gluten-free?

Yes, you can make this casserole gluten-free by using gluten-free breadcrumbs or gluten-free flour. Be sure to check the ingredient labels to ensure that all of the components are gluten-free.

The Full Recipe

Recipe Card