Name: Easy Low Carb Chicken Casserole
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Cuisine: American
Ingredients: 4 boneless, skinless chicken breasts (8 oz each, 32 oz total); Avocado oil spray; ½ teaspoon Diamond Crystal kosher salt (or ¼ teaspoon regular salt); ¼ teaspoon black pepper; ¼ cup mayonnaise (or up to ⅓ cup for a creamier casserole); ¼ cup sour cream (or up to ⅓ cup for a creamier casserole); 1 tablespoon Dijon mustard; 1 tablespoon fresh garlic, minced; ½ teaspoon Diamond Crystal kosher salt (or ¼ teaspoon regular salt); ¼ teaspoon black pepper; ½ teaspoon dried thyme; ½ teaspoon paprika; ¼ teaspoon cayenne pepper; 1 cup sharp cheddar cheese, shredded (divided); ¼ cup scallions (green parts only), sliced; ¼ cup bacon bits (room temperature)

Description

This Easy Low Carb Chicken Casserole is a creamy, cheesy, protein-packed comfort meal that’s perfect for busy weeknights. Made with juicy chicken breasts, a flavorful garlic-Dijon sauce, and topped with sharp cheddar, scallions, and crispy bacon bits—this casserole satisfies without the carbs.

Ingredients

Scale

Chicken:

4 boneless, skinless chicken breasts (8 oz each, 32 oz total)
Avocado oil spray
½ teaspoon Diamond Crystal kosher salt (or ¼ teaspoon regular salt)
¼ teaspoon black pepper

Sauce:

¼ cup mayonnaise (or up to ⅓ cup for a creamier casserole)
¼ cup sour cream (or up to ⅓ cup for a creamier casserole)
1 tablespoon Dijon mustard
1 tablespoon fresh garlic, minced
½ teaspoon Diamond Crystal kosher salt (or ¼ teaspoon regular salt)
¼ teaspoon black pepper
½ teaspoon dried thyme
½ teaspoon paprika
¼ teaspoon cayenne pepper
1 cup sharp cheddar cheese, shredded (divided)

Topping:

¼ cup scallions (green parts only), sliced
¼ cup bacon bits (room temperature)

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Instructions

Preheat oven to 375°F (190°C). Lightly spray a casserole dish with avocado oil.
Lightly season chicken breasts with salt and pepper. In a skillet over medium heat, sear chicken for 2–3 minutes per side until lightly browned (optional step for added flavor).
In a mixing bowl, combine mayonnaise, sour cream, Dijon mustard, garlic, salt, pepper, thyme, paprika, and cayenne pepper. Stir in half of the shredded cheddar (½ cup).
Place chicken breasts in the casserole dish. Spread the sauce evenly over the chicken.
Sprinkle remaining cheddar cheese (½ cup) over the top.
Bake uncovered for 25–30 minutes, or until the chicken reaches an internal temperature of 165°F (74°C).
Remove from oven and sprinkle with scallions and bacon bits.
Let rest for 5 minutes before serving.

Notes

You can use cooked, shredded rotisserie chicken to save time—reduce bake time accordingly.
For even fewer carbs, omit the onions or use green garlic.
Use full-fat mayo and sour cream for best texture and richness.

Prep Time: 10 minutes
Cook Time: 30 minutes
Category: Main Dish
Method: Baking
Cuisine: American