Slow Cooker Creamy Mozzarella Chicken – Tender, Cheesy Chicken in a Rich Garlic Parmesan Sauce

This Slow Cooker Creamy Mozzarella Chicken is the kind of effortless comfort-food dinner that practically cooks itself. Tender chicken slowly simmers with garlic, Italian herbs, and a savory cream sauce before being finished with Parmesan and plenty of gooey mozzarella.

The slow cooker keeps the chicken juicy while giving the seasonings plenty of time to blend into the sauce. Cream cheese adds body, Parmesan brings savory depth, and mozzarella creates that irresistible cheesy finish Americans love in cozy chicken dinners.

It's perfect for busy weeknights, Sunday family meals, or meal prep when you want something satisfying without spending hours at the stove. Serve it over mashed potatoes, pasta, or rice so none of that creamy garlic sauce goes to waste.

Ingredients

For the Chicken

• 2 pounds boneless, skinless chicken breasts
• 1 teaspoon kosher salt
• ½ teaspoon freshly ground black pepper
• 1 teaspoon garlic powder
• 1 teaspoon onion powder
• 1 teaspoon Italian seasoning
• ½ teaspoon smoked paprika

For the Creamy Garlic Sauce

• 4 cloves garlic, finely minced
• 1 cup low-sodium chicken broth
• 8 ounces full-fat cream cheese, softened and cut into cubes
• ½ cup heavy cream
• ¾ cup freshly grated Parmesan cheese
• 1 teaspoon Italian seasoning
• ½ teaspoon dried basil
• ¼ teaspoon crushed red pepper flakes, optional

For the Cheesy Mozzarella Finish

• 1½ cups freshly shredded low-moisture mozzarella cheese
• 2 tablespoons freshly grated Parmesan cheese
• 2 tablespoons chopped fresh parsley
• Fresh basil, optional

How to Make Slow Cooker Creamy Mozzarella Chicken

Step 1 – Season the Chicken

Pat the chicken breasts dry with paper towels.

Season both sides with salt, black pepper, garlic powder, onion powder, Italian seasoning, and smoked paprika.

Step 2 – Arrange in the Slow Cooker

Place the seasoned chicken in the bottom of a 6-quart slow cooker, arranging the pieces in as even a layer as possible.

Sprinkle the minced garlic over the chicken.

Pour the chicken broth around the chicken rather than directly washing the seasonings off the top.

Step 3 – Slow Cook

Cover and cook on LOW for about 3–4 hours, or until the thickest part of the chicken reaches 165°F (74°C).

Cooking times vary between slow cookers and with the thickness of the chicken breasts, so start checking early.

Avoid cooking chicken breasts all day—they can become dry even in a slow cooker.

Step 4 – Remove the Chicken

Transfer the cooked chicken to a plate and cover loosely with foil.

Leave the flavorful cooking liquid in the slow cooker.

Step 5 – Make It Creamy

Add the softened cream cheese, heavy cream, Parmesan, Italian seasoning, basil, and red pepper flakes to the cooking liquid.

Whisk until the cream cheese melts and the sauce becomes smooth.

Cover and cook on HIGH for 10–15 minutes if needed to help everything come together.

Step 6 – Adjust the Sauce

If you'd like a thicker sauce, leave the slow cooker uncovered on HIGH for another few minutes.

If the sauce becomes too thick, add a small splash of chicken broth or heavy cream.

Taste and adjust the salt and black pepper.

Step 7 – Add the Chicken Back

Return the chicken breasts to the slow cooker.

Spoon plenty of creamy garlic-Parmesan sauce over each piece.

Step 8 – Add the Mozzarella

Sprinkle the mozzarella evenly over the chicken, followed by the extra Parmesan.

Cover and cook on HIGH for another 10–15 minutes, just until the mozzarella is completely melted.

Step 9 – Finish & Serve

Turn off the slow cooker and let the chicken rest in the sauce for about 5 minutes.

Finish with chopped parsley, fresh basil, cracked black pepper, or additional Parmesan.

Serve warm with plenty of sauce spooned over the top.

Chef's Tips for the Best Creamy Mozzarella Chicken

• Don't overcook chicken breasts. Start checking the internal temperature toward the early end of the cooking window.
• Use similarly sized chicken breasts so they finish cooking around the same time.
• Boneless, skinless chicken thighs can be substituted if you prefer darker, juicier meat.
• Don't add the heavy cream at the beginning. Adding dairy near the end reduces the chance of the sauce separating during long slow cooking.
• Let the cream cheese soften and cut it into cubes so it melts into the sauce more easily.
• Freshly grated Parmesan creates a smoother sauce than many packaged varieties.
• Use low-moisture mozzarella, not fresh mozzarella stored in liquid.
• Add the mozzarella only at the end. Long cooking can make melted cheese oily or rubbery.
• Taste before adding additional salt because chicken broth and Parmesan already contribute saltiness.
• For a thicker sauce, remove the chicken before finishing the sauce rather than trying to reduce everything while the chicken continues cooking.

The Secret to a Smooth Slow Cooker Cream Sauce

Dairy ingredients don't need hours in the slow cooker.

For the best texture, let the chicken cook primarily in seasoned broth and garlic. Once it's tender, remove it temporarily and transform the cooking liquid into the cream sauce.

Adding cream cheese, heavy cream, and Parmesan near the end keeps the sauce richer and smoother while reducing the risk of curdling or separation.

Mozzarella goes in last, giving you a beautifully melted cheesy topping without overcooking it.

Delicious Variations

Tuscan Mozzarella Chicken

Add ½ cup chopped sun-dried tomatoes with the chicken and stir 2–3 cups baby spinach into the sauce near the end.

Bacon Mozzarella Chicken

Top the finished chicken with 6 slices crispy crumbled bacon and chopped green onions.

Mushroom Garlic Chicken

Sauté 8 ounces of sliced cremini mushrooms and stir them into the cream sauce before returning the chicken.

Spicy Mozzarella Chicken

Increase the crushed red pepper flakes and add sliced pickled jalapeños before serving.

Broccoli Mozzarella Chicken

Add lightly steamed broccoli florets during the final 15 minutes for an easy chicken-and-vegetable dinner.

What to Serve With

• Creamy mashed potatoes
• Buttered egg noodles
• Fettuccine or penne
• Steamed white rice
• Garlic bread
• Roasted broccoli
• Garlic green beans
• Roasted asparagus
• Caesar salad

For maximum comfort-food appeal, serve the chicken over creamy mashed potatoes or pasta and spoon the garlic-Parmesan sauce generously over everything.

Make-Ahead Tips

The chicken can be seasoned the night before and refrigerated in an airtight container.

You can also grate the cheeses and measure the seasonings ahead of time, making this an especially quick slow-cooker meal to start in the morning or early afternoon.

For food safety, don't leave raw chicken sitting in the slow cooker insert at room temperature before cooking.

Storage & Reheating

Refrigerator

Store leftover chicken and sauce in an airtight container for up to 3–4 days.

Freezer

The cooked chicken itself freezes well, but cream-and-cheese sauces can change texture after thawing.

If freezing the complete dish, store it for up to 2 months and thaw overnight in the refrigerator. Gently stirring in a little fresh cream during reheating can help restore the sauce.

Stovetop

Reheat over low heat with a splash of chicken broth, milk, or cream, stirring the sauce gently until smooth and hot.

Microwave

Cover and heat individual portions in 30-second intervals, spooning sauce over the chicken between intervals to help keep it moist.

Notes

• Chicken breasts work well for a leaner dinner, while boneless chicken thighs provide an especially juicy, forgiving alternative.
• Low-moisture mozzarella gives the dish its familiar melty cheese finish without adding excess liquid to the sauce.
• For an extra golden top, transfer the finished chicken and sauce to an oven-safe dish, add the mozzarella, and broil for 2–3 minutes until bubbly and lightly browned.
• The sauce naturally thickens as it cools, so keep it slightly looser while it's still in the slow cooker.
• This recipe is especially good for busy weeknights, Sunday dinners, family meals, meal prep, or anytime you're craving an easy slow-cooker dinner with plenty of creamy, cheesy comfort-food flavor.