Keto BBQ Chicken Casserole – Comforting, Low-Carb, and Easy
This Keto BBQ Chicken Casserole brings smoky flavor, creamy texture, and serious weeknight convenience. It’s the kind of dish you can toss together with leftover chicken and a few pantry staples, then bake until bubbly and golden. No complicated steps, no hard-to-find ingredients—just straightforward comfort food that fits your low-carb goals.
The flavors are bold but familiar, and it reheats beautifully for lunches the next day. If you’re looking for an easy win that makes everyone at the table happy, this is it.
Ingredients
Method
- Preheat the oven. Set to 375°F (190°C). Grease a 9x13-inch baking dish with butter, avocado oil, or olive oil spray.
- Par-cook the cauliflower. Steam or microwave florets until just tender-crisp, about 4–5 minutes. Drain well and pat dry to remove excess moisture. This keeps the casserole from getting watery.
- Mix the sauce. In a large bowl, whisk the sugar-free BBQ sauce, mayonnaise, sour cream, vinegar, smoked paprika, garlic powder, onion powder, pepper, and salt until smooth.
- Combine the base. Stir in the shredded chicken and cauliflower until evenly coated. Fold in half of the cheddar and half of the mozzarella.
- Assemble. Spread the mixture in the prepared dish. Top with the remaining cheddar and mozzarella. Sprinkle on the crumbled bacon if using.
- Bake. Bake for 18–22 minutes, or until the edges bubble and the cheese melts. For a golden top, broil for 1–2 minutes at the end, watching closely.
- Finish and serve. Let it rest for 5 minutes to set. Garnish with sliced green onions. Serve hot with a simple side salad or roasted green beans.
What Makes This Special
This casserole captures the tangy-sweet punch of barbecue without the sugar overload. You get the same backyard vibe, but in a cheesy, oven-baked format that’s perfect for meal prep.
It’s gluten-free, low-carb, and high in protein, with plenty of satisfying fats to keep you full.
Better yet, it’s flexible. You can use rotisserie chicken, swap in turkey, or add low-carb veggies for extra volume. The bake time is short, cleanup is minimal, and it’s a great option for feeding a crowd on a budget.
Ingredients
- 4 cups cooked shredded chicken (rotisserie or poached)
- 1 cup sugar-free BBQ sauce (store-bought or homemade; look for 2–3g net carbs per serving)
- 1/2 cup mayonnaise
- 1/3 cup full-fat sour cream
- 1 tablespoon apple cider vinegar (optional, for brightness)
- 1 teaspoon smoked paprika
- 1/2 teaspoon garlic powder
- 1/2 teaspoon onion powder
- 1/4 teaspoon ground black pepper
- 1/4 teaspoon sea salt (adjust to taste)
- 1 medium head cauliflower, cut into small florets (about 4 cups) or 12 oz frozen florets
- 1 cup shredded cheddar cheese
- 1 cup shredded mozzarella
- 2 slices sugar-free bacon, cooked and crumbled (optional but great)
- 2 green onions, thinly sliced (for topping)
How to Make It
- Preheat the oven. Set to 375°F (190°C).
Grease a 9×13-inch baking dish with butter, avocado oil, or olive oil spray.
- Par-cook the cauliflower. Steam or microwave florets until just tender-crisp, about 4–5 minutes. Drain well and pat dry to remove excess moisture. This keeps the casserole from getting watery.
- Mix the sauce. In a large bowl, whisk the sugar-free BBQ sauce, mayonnaise, sour cream, vinegar, smoked paprika, garlic powder, onion powder, pepper, and salt until smooth.
- Combine the base. Stir in the shredded chicken and cauliflower until evenly coated.
Fold in half of the cheddar and half of the mozzarella.
- Assemble. Spread the mixture in the prepared dish. Top with the remaining cheddar and mozzarella. Sprinkle on the crumbled bacon if using.
- Bake. Bake for 18–22 minutes, or until the edges bubble and the cheese melts.
For a golden top, broil for 1–2 minutes at the end, watching closely.
- Finish and serve. Let it rest for 5 minutes to set. Garnish with sliced green onions. Serve hot with a simple side salad or roasted green beans.
Storage Instructions
- Refrigerator: Store in an airtight container for 3–4 days.
Reheat in the microwave or cover with foil and warm in a 325°F oven.
- Freezer: Cool completely, then wrap tightly or portion into containers. Freeze up to 2 months. Thaw in the fridge overnight before reheating.
- Reheating tips: Add a spoonful of water or a splash of cream before reheating to keep it moist.
Reheat gently to avoid overcooking the chicken.
Health Benefits
- Low in carbs: Using sugar-free BBQ sauce and cauliflower keeps net carbs in check while delivering comfort-food flavor.
- High in protein: Shredded chicken supports muscle repair and keeps you satisfied.
- Balanced fats: Full-fat dairy helps with satiety and can make sticking to keto easier.
- Gluten-free: Naturally free from grains and gluten, great for those with sensitivities.
- Customizable fiber: Add a handful of spinach or chopped broccoli for more fiber and micronutrients without spiking carbs.
What Not to Do
- Don’t skip draining the cauliflower. Excess moisture can make the casserole watery.
- Don’t use regular BBQ sauce. Traditional sauces are high in sugar and will push carbs way up.
- Don’t overbake. The chicken is already cooked; too much time in the oven can dry it out.
- Don’t overload with add-ins. Stick to low-carb vegetables, and keep quantities moderate to maintain texture and macros.
Alternatives
- Protein swaps: Use shredded turkey, pulled pork, or rotisserie chicken thighs for a richer flavor.
- Veggie swaps: Replace cauliflower with chopped broccoli, riced cauliflower, or a mix of bell pepper and zucchini (keep amounts modest to avoid excess moisture).
- Dairy-free option: Use avocado oil mayo and a dairy-free cheese that melts well. Replace sour cream with full-fat coconut yogurt (unsweetened) and add extra smoked paprika.
- Spice level: Stir in a pinch of cayenne, a few dashes of hot sauce, or chipotle powder for heat.
- Topping ideas: Add crushed pork rinds for crunch during the last 5 minutes of baking, or swirl an extra tablespoon of BBQ sauce on top before the final broil.
FAQ
How many carbs are in this Keto BBQ Chicken Casserole?
Exact numbers depend on your sauce and portions, but a typical serving (1/6 of the recipe) lands around 5–7g net carbs when using a quality sugar-free BBQ sauce. Always check labels and calculate based on your ingredients.
Can I make this ahead?
Yes.
Assemble the casserole, cover, and refrigerate for up to 24 hours before baking. Add 5–8 minutes to the bake time if it goes into the oven cold.
What’s the best sugar-free BBQ sauce to use?
Choose a brand sweetened with stevia, monk fruit, or erythritol, with minimal added fillers. Look for a smoky, tangy profile and 2–3g net carbs per serving.
If you prefer homemade, combine tomato paste, apple cider vinegar, smoked paprika, garlic, and a keto sweetener.
Can I use raw chicken instead of cooked?
It’s better to use cooked shredded chicken for even texture and quick bake time. If starting with raw chicken, cook it first by poaching or baking, then shred and proceed with the recipe.
Why is my casserole watery?
Cauliflower likely released extra moisture. Make sure to steam just until tender-crisp, then drain and pat dry.
Avoid covering the casserole while baking, and consider broiling briefly to help evaporate surface moisture.
What cheese melts best here?
A mix of cheddar for flavor and mozzarella for stretch gives the best texture. Monterey Jack or provolone also work well if that’s what you have.
Is this spicy?
As written, it’s mild and family-friendly. If you want heat, add chipotle powder, cayenne, or a drizzle of hot sauce in the sauce mixture.
Can I make it without mayonnaise?
Yes.
Replace mayo with more sour cream or softened cream cheese. Add a tablespoon of olive oil or melted butter for richness if needed.
In Conclusion
This Keto BBQ Chicken Casserole checks all the boxes: simple prep, big flavor, and macros that support your goals. It’s hearty enough for dinner, easy to reheat for lunch, and flexible with pantry swaps.
Keep a jar of good sugar-free BBQ sauce on hand, and this dish becomes a reliable, go-to weeknight favorite. Serve it hot, top with green onions, and enjoy the comfort without the carbs.
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