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Keto Crockpot Chicken Parmesan Casserole - Cozy, Low-Carb Comfort Food

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Prep Time 15 minutes
Cook Time 4 hours
Total Time 4 hours 15 minutes
Servings: 6 servings
Ingredients Method

Ingredients
  

  • 2 to 2.5 pounds boneless, skinless chicken breasts (or thighs for extra juiciness)
  • 2 cups low-carb marinara sauce (look for no-sugar-added)
  • 2 tablespoons olive oil
  • 3 cloves garlic, minced
  • 1 teaspoon onion powder
  • 1 teaspoon dried basil
  • 1 teaspoon dried oregano
  • 1/2 teaspoon crushed red pepper flakes (optional)
  • Salt and black pepper to taste
  • 1/2 cup grated Parmesan cheese
  • 1 1/2 cups shredded mozzarella cheese
  • 2 tablespoons chopped fresh parsley or basil (for garnish)
  • 1 medium zucchini, spiralized or ribboned (optional, for serving)

Method
 

  1. Prep the slow cooker: Lightly grease the crock with olive oil or nonstick spray. This helps prevent sticking and makes cleanup easier.
  2. Season the chicken: Pat chicken dry. Season both sides with salt, pepper, onion powder, basil, and oregano. Place the chicken in a single layer in the crock.
  3. Build the sauce: In a bowl, stir together the marinara, olive oil, minced garlic, and red pepper flakes. Taste and adjust salt and pepper. Pour the sauce over the chicken, coating it evenly.
  4. Slow cook: Cover and cook on Low for 4–5 hours or High for 2–3 hours, until the chicken is tender and easy to shred. Avoid lifting the lid often to keep the heat steady.
  5. Shred the chicken: Transfer the chicken to a cutting board and shred with two forks, or shred directly in the crock if there’s room. Return the chicken to the sauce and stir to combine.
  6. Add the cheeses: Sprinkle in the grated Parmesan and stir. Smooth the surface, then top evenly with shredded mozzarella.
  7. Melt and set: Cover and cook on Low for 15–20 minutes, just until the mozzarella is melted and gooey. If your slow cooker has a “keep warm” setting, switch to that once the cheese is melted.
  8. Finish and serve: Sprinkle with chopped parsley or basil. Serve as is, or spoon over sautéed zucchini noodles, roasted cauliflower, or a bed of wilted spinach.