This creamy chicken casserole is one of those back-pocket recipes that’s perfect for busy weeknights when you still want something comforting and homemade. It uses just three low-carb ingredients, but it tastes like the kind of dish you’d bring to a church potluck or share after a chilly Friday night football game. Casseroles are a big part of Midwestern cooking—warm, cozy, and meant to feed the people you love without a lot of fuss. This version keeps things simple and lighter on the carbs, but still gives you that rich, creamy, stick-to-your-ribs feeling that makes everyone linger at the table just a little longer.
This low-carb creamy chicken casserole pairs really nicely with simple, fresh sides. A green salad with a tangy vinaigrette helps balance the richness, or you can steam some broccoli or green beans and toss them with a little butter and salt. If you’re feeding both low-carb and non–low-carb eaters, you can spoon the casserole over a bed of cauliflower rice for some and over egg noodles or mashed potatoes for others. A side of roasted veggies—like Brussels sprouts, zucchini, or carrots—turns it into a complete, colorful meal that looks inviting right in the middle of the table.
3-Ingredient Low-Carb Creamy Chicken CasseroleServings: 4
Ingredients
1 1/2 pounds boneless, skinless chicken breasts (about 3–4 small breasts), cut into bite-sized pieces
1 cup full-fat sour cream
1 1/2 cups shredded cheese (such as mozzarella, cheddar, or a blend), divided
Directions
Preheat your oven to 375°F (190°C). Lightly grease a medium casserole dish (about 8x8 or similar size).
Cut the chicken breasts into bite-sized pieces and spread them evenly in the bottom of the prepared casserole dish.
In a medium bowl, stir together the sour cream and 1 cup of the shredded cheese until well combined.
Spoon the sour cream and cheese mixture over the chicken pieces, spreading it out so the chicken is mostly covered.
Sprinkle the remaining 1/2 cup shredded cheese evenly over the top of the casserole.
Cover the dish loosely with foil and bake for 20 minutes. Then remove the foil and continue baking for another 10–15 minutes, or until the chicken is cooked through (no pink in the center) and the top is bubbly and lightly golden.
Let the casserole rest for 5–10 minutes before serving so the sauce can thicken slightly and everything can set. Serve warm and enjoy.
Variations & Tips
For picky eaters, you can use a milder cheese like mozzarella or Colby Jack so the flavor stays creamy and gentle. If your family likes a little more flavor, try using a sharp cheddar or pepper jack for a bit of a kick. You can also swap sour cream for full-fat plain Greek yogurt if that’s what you have on hand, just know it will have a slightly tangier taste. To stretch the casserole for a bigger crowd without adding many carbs, stir in some steamed, chopped broccoli or cauliflower before baking. If you’re cooking for both low-carb and carb-loving folks, bake the casserole as-is and set out bowls of cooked rice, egg noodles, or mashed potatoes on the side so everyone can build their own plate. For extra convenience on a busy night, assemble the casserole earlier in the day, cover, and keep it in the fridge; then just pop it into the oven when you’re ready to start dinner—add a few extra minutes to the baking time if it’s going in cold.
