Creamy Low Carb Chicken Casserole
I still remember the first time I made a low-carb casserole that actually tasted indulgent — the house smelled like warm garlic and thyme, and even my skeptical partner asked for seconds. This version keeps that cozy feeling but trims the carbs without losing creaminess. If you like casseroles with a golden top and soft, saucy chicken, you’ll get why I keep coming back to it. (If you want another comforting chicken bake, try this chicken and spinach casserole for a different twist.)
What makes this recipe special
This casserole balances silky cream cheese sauce with tender shredded chicken and a crisp, cheesy top — no heavy flour roux required. It’s quick to assemble, makes great leftovers, and uses a time-saving trick: rotisserie chicken or pre-cooked chicken to speed dinner prep without sacrificing flavor.
Ingredients
- 3 cups cooked shredded chicken (rotisserie or poached), about 2 large breasts
- 8 oz cream cheese, softened (full fat for best texture)
- 1 cup sour cream or Greek yogurt (use Greek yogurt for tang and fewer calories)
- 1/2 cup chicken broth (low sodium preferred)
- 1 cup shredded mozzarella (or Monterey Jack)
- 1/2 cup grated Parmesan
- 1 small onion, finely chopped
- 2 cloves garlic, minced
- 1 cup chopped mushrooms (optional)
- 2 cups chopped cauliflower florets, lightly steamed (low-carb "potato" substitute)
- 1 tsp Dijon mustard
- 1 tsp dried thyme (or 1 tbsp fresh, chopped)
- 1/2 tsp smoked paprika
- Salt and black pepper to taste
- 2 tbsp olive oil or butter for sautéing
- Fresh parsley for garnish (optional)
Notes/substitutions:
- Cauliflower can be swapped for broccoli or a mix of low-carb veggies.
- For a lighter sauce, use half cream cheese and half cottage cheese blended smooth.
- Make it dairy-free using vegan cream cheese and shredded vegan cheese (see Tips).
Instructions
Preheat your oven to 375°F (190°C). Lightly grease a 9×9-inch baking dish.
Warm a skillet over medium heat and add the oil or butter. Sauté the onion until soft and translucent, about 4–5 minutes. Toss in the garlic and mushrooms, cooking until the mushrooms give up moisture and begin to brown. This builds flavor for the sauce.
In a large bowl, beat the softened cream cheese with sour cream (or yogurt) until smooth. Stir in chicken broth a little at a time to loosen the mixture into a pourable sauce. Add Dijon, thyme, smoked paprika, salt, and pepper. Fold in shredded chicken and steamed cauliflower so everything is coated. If the mixture seems dry, add another tablespoon of broth.
Taste and adjust seasoning — it should be creamy with a gentle tang. Pour the mixture into the prepared baking dish. Sprinkle the top with mozzarella and Parmesan to form that golden crust.
Bake uncovered for 20–25 minutes until bubbly and the top is lightly browned. If you want extra color, broil 1–2 minutes but watch closely so it doesn’t burn. Remove and let it rest 5 minutes; the sauce will thicken and set slightly as it cools.
Serving Suggestions
Serve warm straight from the dish with a crisp green salad or roasted asparagus for contrast. A spoonful of pickled onions or a squeeze of lemon brightens the richness. For a lower-carb “bread” option, pair with almond flour biscuits or cloud bread.
Tips & Variations
- Make it spicy: stir in 1/2 tsp red pepper flakes or diced jalapeño.
- Herb-forward: swap thyme for basil and add sun-dried tomatoes.
- Vegan/ dairy-free: use vegan cream cheese, unsweetened almond milk to thin, and vegan shredded cheese; bake a little longer to get color.
- Shortcut: Use a store-bought rotisserie chicken and frozen riced cauliflower to cut prep time in half. Try this method to mimic pot-pie textures like in my note on air-fried chicken wings seasoning (great for inspired flavor pairings).
- Make-ahead: Assemble, cover, and refrigerate up to 24 hours; add 5–10 minutes to baking time if cold.
Q&A
Q: Can I use raw chicken?
A: Yes — dice or shred about 1.5 lbs raw chicken, sauté until just cooked through before mixing into the sauce. Ensure it reaches 165°F when baking.
Q: How do I keep the casserole from getting watery?
A: Don’t oversteam the cauliflower; it should be tender but not soggy. Also, use full-fat cream cheese — low-fat versions can release more water. Let the casserole rest after baking to set.
Q: Is this freezer-friendly?
A: Absolutely. Freeze in an airtight container for up to 3 months. Thaw overnight in the fridge and reheat covered at 350°F until warmed through.
Q: Can I add rice or potatoes?
A: You can, but it will no longer be low carb. If you want a heartier dish, stir in 1–2 cups cooked rice or diced pre-roasted potatoes before baking.
Behind The Scenes
I developed this recipe over a few weeknight experiments. My first batch was too saucy — I’d steamed cauliflower until mushy. Once I switched to lightly steamed florets and used a touch more cream cheese, the texture hit a perfect balance. I also discovered that a short broil gives the top the comfort-food vibe without drying the filling.
Final thoughts
This casserole is a weeknight champion: cozy, quick, and easy to modify. It’s great for potlucks (bring the dish right from the oven) or as a make-ahead meal for a busy week. Pair with a zesty salad, roasted green beans, or a simple tomato relish to cut through the richness. Leftovers reheat beautifully for lunches.
Conclusion
If you want another tried-and-true creamy keto variation, check out this detailed Creamy keto chicken casserole – Family on Keto for extra inspiration and tweaks to keep your low-carb dinners exciting.
Can’t wait for you to try it!
Creamy Low Carb Chicken Casserole
Ingredients
Method
- Preheat your oven to 375°F (190°C). Lightly grease a 9x9-inch baking dish.
- Warm a skillet over medium heat and add the oil or butter. Sauté the onion until soft and translucent, about 4–5 minutes.
- Toss in the garlic and mushrooms, cooking until the mushrooms give up moisture and begin to brown.
- In a large bowl, beat the softened cream cheese with sour cream (or yogurt) until smooth.
- Stir in chicken broth a little at a time to loosen the mixture into a pourable sauce.
- Add Dijon, thyme, smoked paprika, salt, and pepper. Fold in shredded chicken and steamed cauliflower so everything is coated.
- If the mixture seems dry, add another tablespoon of broth.
- Taste and adjust seasoning — it should be creamy with a gentle tang.
- Pour the mixture into the prepared baking dish. Sprinkle the top with mozzarella and Parmesan.
- Bake uncovered for 20–25 minutes until bubbly and the top is lightly browned.
- If you want extra color, broil for 1–2 minutes but watch closely so it doesn’t burn.
- Remove and let it rest for 5 minutes; the sauce will thicken and set slightly as it cools.
