Name: Keto Creamy Chicken and Mushroom Casserole Recipe
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Cuisine: Keto
Ingredients: 2 lbs boneless, skinless chicken breasts, cut into bite-sized pieces; 16 oz mushrooms, sliced; 4 cloves garlic, minced; 2 tablespoons olive oil; Salt, to taste; Pepper, to taste; 1 cup heavy cream; ½ cup chicken broth; ½ cup cream cheese, softened; 1 teaspoon dried thyme; 1 teaspoon paprika; 1 cup shredded cheese (cheddar or mozzarella); Fresh parsley, chopped, for garnish

Jump to Recipe· 4.2 from 69 reviews

If you’re craving a comforting, low-carb dish that’s bursting with flavor, the Keto Creamy Chicken and Mushroom Casserole Recipe is exactly what you need. Tender chicken pieces meld perfectly with earthy mushrooms and a luscious creamy sauce, all topped with melty cheese that forms a golden crust. This hearty casserole is not only incredibly satisfying but also fits perfectly into a keto lifestyle, making your weeknight dinners both easy and indulgent.

Ingredients You’ll Need

The image shows various cooking ingredients neatly arranged on a white marbled surface. At the top right, four raw chicken pieces with a smooth light pink texture lay on a white plate. Below them is a black bowl filled with chopped white and light brown mushrooms. To the top left, a white bowl contains white flour. Scattered around are small bowls with different ingredients: a small red bowl with yellow mustard, a green bowl with olive oil, a white bowl holding two cubes of light yellow butter, a small white plate with minced garlic, and a light blue bowl of green dried herbs. There is also a clear measuring cup filled with light yellow broth and another clear measuring cup containing white cream. Everything is arranged clearly and evenly spaced, making the ingredients easy to see. Photo taken with an iphone --ar 4:5 --v 7

Gathering simple yet essential ingredients is the secret behind this delicious casserole. Each one adds a unique texture, flavor, or richness that makes this dish truly memorable and keto-friendly.

2 lbs boneless, skinless chicken breasts: Cut into bite-sized pieces for quick cooking and easy eating.
16 oz mushrooms: Sliced to add an earthy, meaty texture that complements the chicken.
1 cup heavy cream: Creates a rich and velvety sauce that makes every bite decadent.
1 cup shredded cheese (cheddar or mozzarella): Melts beautifully to provide a gooey, golden topping.
½ cup chicken broth: Adds depth and moisture without disrupting the creamy consistency.
½ cup cream cheese (softened): Intensifies the creaminess, making the sauce smoother and tangier.
4 cloves garlic (minced): Infuses fragrant, savory notes that awaken the palate.
1 teaspoon dried thyme: Offers gentle herbal warmth and subtle complexity.
1 teaspoon paprika: Adds a mild smoky kick and a hint of vibrant color.
Salt and pepper to taste: Essential for balancing and enhancing all the flavors.
2 tablespoons olive oil: Used to sauté the chicken and mushrooms, delivering beautiful caramelization.
Fresh parsley (chopped): For a fresh, bright garnish that lifts the dish visually and flavor-wise.

How to Make Keto Creamy Chicken and Mushroom Casserole Recipe

Step 1: Preheat and Prepare

Start by warming up your oven to 375°F (190°C), so it’s ready when your casserole mixture is prepared. This ensures that the dish bakes evenly and develops that perfect golden crust you’re aiming for.

Step 2: Cook the Chicken

In a large skillet, heat the olive oil over medium-high heat. Add the bite-sized chicken pieces, seasoning them with salt and pepper. Cook the chicken for 5-7 minutes, stirring occasionally until the pieces are nicely browned and cooked through. This searing step locks in juices and builds flavor—the foundation of the casserole’s savory profile.

Step 3: Sauté Mushrooms and Garlic

Using the same skillet, add the sliced mushrooms and cook for about 5 minutes until they turn golden brown and tender. Then, toss in the minced garlic and cook for an additional minute, allowing those garlicky aromas to infuse the mushrooms perfectly.

Step 4: Mix the Creamy Sauce

In a mixing bowl, whisk together the heavy cream, chicken broth, softened cream cheese, dried thyme, and paprika until smooth and combined. This luscious sauce is going to coat the chicken and mushrooms, elevating the casserole’s taste and texture with every bite.

Step 5: Combine and Assemble

In your casserole dish, combine the cooked chicken, sautéed mushrooms and garlic, and creamy sauce mixture. Stir carefully to ensure every piece gets enveloped in that rich sauce, making the flavors meld beautifully when baked.

Step 6: Add Cheese and Bake

Sprinkle the shredded cheese evenly over the top of the casserole. Pop it into the preheated oven and bake for 25-30 minutes, or until the cheese is bubbly and beautifully golden. This final step creates a delightful, melty topping that’s simply irresistible.

Step 7: Garnish and Rest

Once out of the oven, let the casserole rest for a few minutes. Then sprinkle with freshly chopped parsley. This adds a burst of color and a hint of fresh flavor to balance the richness of the dish.

How to Serve Keto Creamy Chicken and Mushroom Casserole Recipe

The image shows two views side by side on a white marbled surface. On the left, there is a black cast iron skillet with four pieces of golden brown cooked chicken arranged in a slightly uneven diamond shape, with a crispy texture on top. On the right, the same black skillet contains a single layer of sliced mushrooms, browned and slightly soft, covering the bottom evenly with some darker and lighter brown tones. photo taken with an iphone --ar 4:5 --v 7

Garnishes

Fresh parsley is an obvious winner for garnishing, but you can also try a sprinkle of grated Parmesan or a dusting of smoked paprika to add extra flavor layers and visual appeal, making the dish look as good as it tastes.

Side Dishes

This casserole shines on its own but pairs wonderfully with crisp steamed veggies like asparagus or green beans to add a refreshing crunch and balance the creamy texture. A simple side salad with a light vinaigrette also complements the richness perfectly.

Creative Ways to Present

For a cozy dinner party, scoop portions into individual ramekins and bake just until bubbly for inviting single servings. Or serve the casserole over cauliflower rice for an extra low-carb twist that absorbs the creamy sauce beautifully.

Make Ahead and Storage

Storing Leftovers

Store any leftover casserole in an airtight container in the refrigerator for up to 3 days. When cooled down properly before refrigerating, it maintains its creamy texture and flavor wonderfully.

Freezing

This Keto Creamy Chicken and Mushroom Casserole Recipe freezes well when assembled but unbaked. Cover it tightly with foil or plastic wrap and freeze for up to 2 months. When ready, bake it straight from the freezer, adding extra time as needed.

Reheating

Reheat leftovers gently in the oven at 350°F (175°C) until warmed through to keep the cheese melty and the sauce creamy. Microwaving works too for a quick fix, but covering the dish helps retain moisture.

FAQs

Can I use chicken thighs instead of breasts?

Absolutely! Chicken thighs will add a richer, juicier flavor to the casserole while staying keto-friendly. Just be sure to adjust cooking times slightly if the pieces are larger.

Is this casserole suitable for other low-carb diets?

Yes, this recipe is ideal for any low-carb eating plan, including Atkins and Paleo with minor ingredient substitutions like dairy-free cream cheese.

Can I make this recipe dairy-free?

With a few tweaks like using coconut cream and dairy-free cheese alternatives, you can adapt this casserole to be dairy-free while keeping it creamy and delicious.

What kind of cheese works best in this recipe?

Cheddar and mozzarella are excellent; cheddar offers sharpness while mozzarella provides gooey stretch. Feel free to experiment with a blend or even Parmesan for an extra punch.

How spicy is this casserole?

This dish is mild with just a hint of warmth from paprika. You can easily add chili flakes or cayenne pepper if you enjoy a spicier kick.

Final Thoughts

This Keto Creamy Chicken and Mushroom Casserole Recipe is one of those dishes that feels like a big, comforting hug from the inside out. It’s simple to make but impressively flavorful and satisfying. I encourage you to give it a try for your next meal—you might just find yourself making it again and again!