I first made this Easy Low Carb Chicken Casserole on a hectic weeknight when I needed something that felt indulgent but wouldn’t derail my low-carb goals. It’s a cozy, creamy bake that pulls together tender chicken, cheesy sauce, and veg without a starchy binder — perfect for meal prep or a family dinner that won’t leave anyone feeling deprived. If you like richer casseroles, you might also enjoy the creamy broccoli and bacon casserole I sometimes alternate with when broccoli is in season.
Why you’ll love this dish
This casserole hits that comfort-food sweet spot while staying low in carbs. You get the satisfaction of a creamy, cheesy bake without pasta or breadcrumbs — I usually use cauliflower and shredded chicken as the base. It comes together quickly if you have cooked chicken on hand, it reheats beautifully, and it’s adaptable for picky eaters.
“I served this at a family Sunday dinner and even the carb-lovers went back for seconds — rich, warm, and perfectly savory.” — a friend who’s notoriously hard to please
Because it’s so flexible, you can make it for a weeknight, bring it to a potluck, or prepare it ahead for an easy freezer meal. For a slightly different take, there’s also another cream-rich variation with broccoli and bacon that’s great when you want a smokier flavor.
Step-by-step overview
This casserole is straightforward: shred or dice cooked chicken, sauté aromatics and mixed low-carb vegetables (usually cauliflower rice and/or chopped broccoli), make a creamy cheese sauce with cream cheese and heavy cream, fold everything together, top with extra cheese, and bake until bubbly and golden. Plan on about 15–20 minutes active prep and 25–30 minutes in the oven. If you’re short on time, use rotisserie chicken and pre-riced cauliflower.
For a complete base reference, this method follows the same technique as the classic creamy low-carb version that inspired my proportions and bake time.
What you’ll need
- 3 cups cooked chicken, shredded or diced (rotisserie or poached)
- 4 cups cauliflower florets or riced cauliflower (or 2 cups cauliflower + 1 cup chopped broccoli)
- 1 small onion, finely chopped
- 2 cloves garlic, minced
- 4 oz cream cheese, softened
- 1/2 cup heavy cream (or full-fat coconut milk for dairy-free)
- 1 1/2 cups shredded cheddar cheese, divided
- 1/4 cup grated Parmesan
- 2 tbsp olive oil or butter
- 1 tsp Dijon mustard (optional, for brightness)
- 1/2 tsp smoked paprika
- Salt and black pepper to taste
- 2 tbsp chopped fresh parsley (optional)
- Optional: 4 slices cooked bacon, crumbled (for topping)
Ingredient notes: you can swap the cauliflower for shredded zucchini (squeeze excess moisture) or use a bag of frozen riced cauliflower — just thaw and drain. If you want richer flavor, substitute half the heavy cream with sour cream.
For a slightly different texture, try the pot-pie-style combination in this chicken pot pie casserole twist which inspired my idea for a heartier topping.
How to prepare it
- Preheat the oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish.
- Heat oil or butter in a large skillet over medium heat. Add the chopped onion and sauté 3–4 minutes until translucent.
- Add garlic and cook 30 seconds until fragrant. Stir in cauliflower (or cauliflower + broccoli) and cook 4–5 minutes until slightly tender. If using shredded zucchini, cook until most moisture has evaporated.
- Reduce heat to low and add cream cheese, heavy cream, and Dijon mustard. Stir until the cream cheese melts into a smooth sauce.
- Stir in 1 cup of the cheddar and the Parmesan until melted. Season with smoked paprika, salt, and pepper.
- Fold in the cooked chicken and half the parsley. Taste and adjust seasoning.
- Transfer the mixture to the prepared baking dish. Sprinkle the remaining cheddar and crumbled bacon (if using) over the top.
- Bake 20–25 minutes until the casserole is bubbling and the top is golden. For a crispier finish, place under the broiler 1–2 minutes — watch closely to avoid burning.
- Let rest 5 minutes, garnish with remaining parsley, and serve.
If you prefer a crusted top, stir 1/4 cup crushed pork rinds into the cheese topping for extra crunch.
Best ways to enjoy it
Serve this casserole straight from the dish with simple, low-carb sides: a crisp green salad with lemon vinaigrette, roasted asparagus, or garlic-butter green beans. For a heartier plate, pair with a warm, seeded flatbread or a spoonful of mashed cauliflower. If you want the pot-pie vibe, try it alongside a flaky biscuit or in the same style as this chicken pot pie casserole for a family-style presentation.
For plating, spoon a generous portion in the center of a warm plate and finish with a sprinkle of fresh herbs and a few crisp bacon bits for texture.
Storage and reheating tips
Refrigerate: Cool the casserole to room temperature, cover tightly, and store in the fridge for up to 3–4 days. Reheat individual portions in the microwave (1–2 minutes, stirring halfway) or in a 350°F (175°C) oven for 12–15 minutes covered with foil until warmed through.
Freeze: Portion into freezer-safe containers for up to 3 months. Thaw overnight in the fridge before reheating. Reheat from frozen at 350°F (175°C) for 30–40 minutes covered, then uncover for the last 10 minutes to brown the top.
Food safety: Always reheat to an internal temperature of 165°F (74°C). Discard leftovers left at room temperature for more than two hours.
Pro chef tips
- Use cold, shredded rotisserie chicken to cut prep time dramatically.
- Dry the vegetables: squeeze excess water from thawed frozen cauliflower or zucchini to avoid a watery casserole.
- Balance richness with acid — a splash of lemon juice or a teaspoon of Dijon brightens the sauce.
- For creamier texture, pulse some of the cauliflower in a food processor before cooking.
- If broiling to brown the top, move the rack up and watch closely — cheese can go from golden to burnt in seconds.
Creative twists
- Keto bacon-and-broccoli: Add chopped broccoli and plenty of crisp bacon; swap cheddar for Gruyère for a nuttier profile.
- Dairy-free: Use full-fat coconut milk and dairy-free cream cheese; nutritional yeast adds cheesy depth.
- Tex-Mex: Stir in a teaspoon chili powder, 1/2 tsp cumin, chopped green chiles, and top with Monterey Jack and sliced jalapeños.
- Herb-forward: Mix in fresh dill and lemon zest, and swap parsley for chives for a brighter finish.
- Crunch topping: Mix almond flour with melted butter and a bit of grated Parmesan, then sprinkle on top for a low-carb crumb.
Helpful answers (FAQ)
Q: How long does this take from start to finish?
A: About 45–55 minutes total — 15–20 minutes active prep if you have cooked chicken, and 25–30 minutes baking time.
Q: Can I use raw chicken?
A: Yes — dice raw chicken and sauté it with the onions until cooked through before adding the vegetables and sauce. Ensure the internal chicken temperature reaches 165°F (74°C).
Q: Is this casserole freezer-friendly?
A: Absolutely. Assemble and freeze before baking (cover tightly) for up to 3 months. Thaw overnight and bake as directed, adding 10–15 minutes if still slightly frozen.
Q: How can I lower the calories without losing creaminess?
A: Use part-skim cream cheese with Greek yogurt (added at the end off-heat) and reduce the heavy cream to 1/4 cup — the yogurt provides tang and creaminess with fewer calories.
Q: Can I make this in a slow cooker?
A: Yes. Combine sautéed veggies, sauce ingredients, and cooked chicken in a slow cooker and warm on low 1–2 hours until bubbly. Add the final cheese topping and broil briefly if you want a golden crust.
If you want more casserole inspiration or alternative bakes to rotate into your meal plan, check variations and related recipes that pair well with this approach.
Print
Easy Low Carb Chicken Casserole
- Total Time: 45 minutes
- Yield: 6 servings 1x
- Diet: Low Carb, Gluten-Free
Description
A cozy, creamy bake with tender chicken and vegetables that fits within low-carb goals.
Ingredients
- 3 cups cooked chicken, shredded or diced
- 4 cups cauliflower florets or riced cauliflower
- 1 small onion, finely chopped
- 2 cloves garlic, minced
- 4 oz cream cheese, softened
- 1/2 cup heavy cream
- 1 1/2 cups shredded cheddar cheese, divided
- 1/4 cup grated Parmesan
- 2 tbsp olive oil or butter
- 1 tsp Dijon mustard (optional)
- 1/2 tsp smoked paprika
- Salt and black pepper to taste
- 2 tbsp chopped fresh parsley (optional)
- 4 slices cooked bacon, crumbled (for topping, optional)
Instructions
- Preheat the oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish.
- Heat oil or butter in a large skillet over medium heat. Add the chopped onion and sauté 3–4 minutes until translucent.
- Add garlic and cook 30 seconds until fragrant. Stir in cauliflower (or cauliflower + broccoli) and cook 4–5 minutes until slightly tender.
- Reduce heat to low and add cream cheese, heavy cream, and Dijon mustard. Stir until the cream cheese melts into a smooth sauce.
- Stir in 1 cup of the cheddar and the Parmesan until melted. Season with smoked paprika, salt, and pepper.
- Fold in the cooked chicken and half the parsley. Taste and adjust seasoning.
- Transfer the mixture to the prepared baking dish. Sprinkle the remaining cheddar and crumbled bacon (if using) over the top.
- Bake for 20–25 minutes until the casserole is bubbling and the top is golden. For a crispier finish, place under the broiler 1–2 minutes.
- Let rest 5 minutes, garnish with remaining parsley, and serve.
Notes
Use rotisserie chicken to cut prep time. This casserole is adaptable with various low-carb vegetables.
- Prep Time: 20 minutes
- Cook Time: 25 minutes
- Category: Main Course
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: 350
- Sugar: 4g
- Sodium: 600mg
- Fat: 22g
- Saturated Fat: 10g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 8g
- Fiber: 3g
- Protein: 25g
- Cholesterol: 70mg
Keywords: low carb, chicken casserole, creamy bake, easy dinner