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Smothered Cheesy Sour Cream Chicken

Tender baked chicken breasts smothered in a garlic Parmesan sour cream sauce and finished with a layer of bubbling mozzarella — an easy, creamy weeknight dinner in 35 minutes.
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Prep Time 10 minutes
Cook Time 25 minutes
Total Time 35 minutes
Servings: 4 servings
Course: Dinner, Main Course
Cuisine: American
Calories: 420
Ingredients Equipment Method Notes

Ingredients
  

  • 4 boneless skinless chicken breasts pounded to even thickness
  • 1 cup sour cream full-fat for best texture
  • 0.5 cup grated Parmesan cheese
  • 1 tsp garlic powder
  • 0.5 tsp onion powder
  • 0.5 tsp salt
  • 0.25 tsp black pepper
  • 1 cup shredded mozzarella or Monterey Jack cheese
  • 1 tbsp fresh parsley chopped, for garnish

Equipment

  • 9x13-inch baking dish
  • medium mixing bowl
  • Meat mallet or rolling pin
  • Instant read thermometer

Method
 

  1. Preheat oven to 375°F (190°C). Lightly grease a 9x13-inch baking dish.
  2. Pat chicken breasts dry with paper towels and arrange in a single layer in the baking dish. Season the tops lightly with salt and pepper.
  3. In a medium bowl, combine sour cream, Parmesan, garlic powder, onion powder, salt, and pepper. Stir until smooth and fully combined.
  4. Spread the sour cream mixture generously over each chicken breast, covering the entire top surface from edge to edge.
  5. Bake uncovered for 20 minutes.
  6. Remove from oven and scatter shredded mozzarella evenly over the sour cream layer. Return to the oven for 5 to 10 minutes until the cheese is melted and bubbling and the internal temperature reads 165°F. For a golden top, broil for the final 1 to 2 minutes watching closely.
  7. Garnish with fresh chopped parsley and serve immediately.

Notes

Storage: Store in an airtight container with sauce intact for up to 3 days. Reheat in a 325°F oven covered with foil for 15 minutes, or in an air fryer at 325°F for 5 to 6 minutes. Make-ahead: Spread sour cream sauce over chicken up to 8 hours ahead and refrigerate covered. Remove from refrigerator 15 minutes before baking. Do not add mozzarella topping until the 20-minute bake is complete. Substitutions: Swap half the sour cream for full-fat Greek yogurt for a tangier flavor. Add crushed Ritz crackers or Panko over the mozzarella before the final bake for crunch. Stir cayenne or hot sauce into the sour cream mixture for heat. Dietary notes: Low-carb friendly.