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Smothered Cheesy Sour Cream Chicken

Smothered Cheesy Sour Cream Chicken is an easy chicken casserole with baked chicken breasts under a thick sour cream, cheddar, and Parmesan blanket. The topping bakes up golden, bubbly, and tangy while the chicken reaches 165°F for juicy results.
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Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes
Servings: 4 servings
Course: Main Dish
Cuisine: American
Calories: 620
Ingredients Equipment Method Notes

Ingredients
  

Chicken and seasoning
  • 4 boneless skinless chicken breasts
  • 0.5 tsp salt to taste
  • 0.5 tsp pepper to taste
  • 0.5 tsp garlic powder to taste
  • 0.5 tsp smoked paprika to taste
Sour cream topping
  • 1 cup sour cream
  • 0.5 cup mayonnaise
  • 1 packet (1 oz) ranch seasoning mix
  • 1 tsp garlic powder
  • 1.5 cup shredded cheddar cheese divided
  • 0.5 cup Parmesan cheese grated
  • 6 strips bacon cooked crispy and crumbled
  • 0.25 fresh chives for garnish

Equipment

  • 1 sheet pan
  • 1 Dutch oven

Method
 

Prep and bake
  1. Preheat the oven to 375°F and grease a 9x13 baking dish.
  2. Season the chicken with salt, pepper, garlic powder, and smoked paprika, then place it in the prepared dish.
  3. Whisk sour cream, mayonnaise, ranch seasoning mix, and garlic powder until smooth.
  4. Spread the sour cream mixture generously over each chicken breast.
  5. Top with 1.5 cups shredded cheddar cheese (divided), grated Parmesan cheese, and crumbled bacon.
  6. Bake for 28-32 minutes at 375°F until the topping is golden and bubbly and the chicken reaches an internal temperature of 165°F.
  7. Garnish with fresh chives before serving.

Notes

For the thickest, most caramelized crust, make sure the topping covers the chicken edge-to-edge and keep the dish on the middle rack. Refrigerate leftovers in an airtight container for up to 3 days; reheat in a 325°F oven until warmed through. Freeze is not recommended because the sour cream topping can separate after thawing. For a lighter option, use light mayonnaise and low-fat sour cream to reduce richness while keeping the tangy flavor.