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Ultimate Creamy & Cheesy Chicken Cauliflower Rice Casserole (Easy Low-Carb Weeknight Dinner)

A square serving of chicken cauliflower rice casserole topped with melted cheddar cheese and parsley.
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Make this satisfying, low-carb chicken cauliflower rice casserole for a comforting, cheesy weeknight meal. It replaces traditional rice with cauliflower rice, keeping the flavor rich while cutting carbs. This recipe is simple to prepare and great for meal prep.

Ingredients

Scale
  • 3 cups cooked, shredded chicken (rotisserie chicken works well)
  • 4 cups cauliflower rice (fresh or frozen)
  • 1 tablespoon olive oil
  • 1 small onion, diced
  • 2 cloves garlic, minced
  • 8 ounces cream cheese, softened
  • 1 cup chicken broth
  • 1 cup shredded cheddar cheese, divided
  • 1/2 cup sour cream or plain Greek yogurt
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1/2 teaspoon dried thyme
  • 1/4 cup chopped fresh parsley, for garnish

Instructions

  1. Preheat your oven to 375°F (190°C). Lightly grease a 9×13 inch baking dish.
  2. If using frozen cauliflower rice, thaw it first and squeeze out as much excess moisture as possible using a clean kitchen towel or paper towels.
  3. Heat the olive oil in a large skillet over medium heat. Add the diced onion and cook until soft, about 5 minutes. Add the minced garlic and cook for 1 minute more until fragrant.
  4. Add the prepared cauliflower rice to the skillet. Cook for 5 to 7 minutes, stirring occasionally, until the moisture has mostly evaporated.
  5. In a large bowl, combine the softened cream cheese, chicken broth, sour cream (or Greek yogurt), salt, pepper, and thyme. Whisk until the mixture is smooth and creamy.
  6. Fold the shredded chicken, the cooked cauliflower rice mixture, and half (1/2 cup) of the cheddar cheese into the cream cheese sauce until everything is evenly coated.
  7. Transfer the mixture to your prepared baking dish and spread it into an even layer.
  8. Sprinkle the remaining 1/2 cup of cheddar cheese over the top of the casserole.
  9. Bake for 20 to 25 minutes, or until the casserole is hot throughout and the cheese on top is melted and lightly golden brown.
  10. Remove from the oven, let it rest for 5 minutes, then garnish with fresh parsley before serving.

Notes

  • For a keto chicken casserole bake, you can add 1/2 cup of shredded mozzarella cheese along with the cheddar for extra richness.
  • If you want to make this a one pan chicken casserole, you can sauté the onion and garlic directly in the baking dish if it is oven-safe, but mixing the sauce separately yields a smoother texture.
  • This recipe is excellent for meal prep; cool completely, cover, and refrigerate for up to 4 days.

Nutrition

Find it online: https://cookingbyfelix.com/chicken-cauliflower-rice-casserole/