Keto BBQ Chicken Casserole – Comfort Food With Smoky, Low-Carb Flavor

This Keto BBQ Chicken Casserole brings the backyard cookout straight to your oven without derailing your low-carb goals. It’s hearty, cheesy, and packed with smoky barbecue flavor—no sugar-laden sauce required. You’ll get tender chicken, crisp-tender veggies, and a creamy, tangy sauce baked together into a satisfying weeknight meal.

Best of all, it’s simple to assemble and flexible with what you have on hand. If you’re craving comfort food that still fits your macros, this one checks every box.

Keto BBQ Chicken Casserole - Comfort Food With Smoky, Low-Carb Flavor

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Prep Time 15 minutes mins

Cook Time 30 minutes mins

Total Time 45 minutes mins

Servings: 6 servings

Ingredients Method

Ingredients

  

• 3 cups cooked shredded chicken (rotisserie or poached; about 1.5 lbs before cooking)
• 2 cups small cauliflower florets (fresh or frozen, thawed and patted dry)
• 1 small red bell pepper, diced
• 1/2 small red onion, thinly sliced
• 1 cup shredded cheddar cheese
• 1 cup shredded mozzarella cheese
• 3/4 cup no-sugar-added BBQ sauce (look for 1–3g net carbs per serving)
• 2 tbsp mayonnaise
• 2 oz cream cheese, softened
• 1 tbsp apple cider vinegar (optional, for tang)
• 1 tsp smoked paprika
• 1/2 tsp garlic powder
• 1/2 tsp onion powder
• 1/4 tsp cayenne pepper (optional, for heat)
• Salt and black pepper, to taste
• 2 tbsp olive oil or avocado oil
• Fresh parsley or green onions, chopped, for garnish

Method

 

1. Prep the oven and pan: Preheat to 400°F (200°C). Lightly grease a 9x13-inch baking dish.
2. Roast the veggies: Toss cauliflower, bell pepper, and red onion with oil, smoked paprika, a pinch of salt, and black pepper. Spread on a sheet pan and roast for 12–15 minutes until crisp-tender. This step keeps the casserole from getting watery.
3. Make the keto BBQ sauce blend: In a bowl, whisk BBQ sauce, mayonnaise, cream cheese, apple cider vinegar, garlic powder, onion powder, and cayenne. Stir until smooth. Taste and adjust salt and pepper.
4. Combine with chicken: In a large mixing bowl, add shredded chicken and the roasted veggies. Pour in the sauce and toss until everything is well coated.
5. Assemble the casserole: Spread the mixture into the baking dish. Sprinkle cheddar and mozzarella evenly on top.
6. Bake: Bake for 15–18 minutes, until the cheese is melted and bubbling around the edges.
7. Broil for color: If you like a golden top, switch to broil for 1–2 minutes. Watch closely so it doesn’t burn.
8. Rest and garnish: Let it sit for 5 minutes to set. Garnish with chopped parsley or green onions.
9. Serve: Spoon into bowls and enjoy as is, or pair with a simple green salad or roasted broccoli.

What Makes This Special

This casserole captures the best parts of BBQ chicken while keeping the carbs low and the protein high. The sauce uses a no-sugar-added BBQ base plus a little mayonnaise and cream cheese to create a thick, clingy coating that doesn’t soak the casserole with extra liquid.

A layer of melted cheddar and mozzarella delivers that irresistible pull with each bite. Roasted cauliflower and peppers add body and sweetness without spiking carbs, and the whole dish reheats like a dream for easy lunches.

Ingredients

• 3 cups cooked shredded chicken (rotisserie or poached; about 1.5 lbs before cooking)
• 2 cups small cauliflower florets (fresh or frozen, thawed and patted dry)
• 1 small red bell pepper, diced
• 1/2 small red onion, thinly sliced
• 1 cup shredded cheddar cheese
• 1 cup shredded mozzarella cheese
• 3/4 cup no-sugar-added BBQ sauce (look for 1–3g net carbs per serving)
• 2 tbsp mayonnaise
• 2 oz cream cheese, softened
• 1 tbsp apple cider vinegar (optional, for tang)
• 1 tsp smoked paprika
• 1/2 tsp garlic powder
• 1/2 tsp onion powder
• 1/4 tsp cayenne pepper (optional, for heat)
• Salt and black pepper, to taste
• 2 tbsp olive oil or avocado oil
• Fresh parsley or green onions, chopped, for garnish

Instructions

1. Prep the oven and pan: Preheat to 400°F (200°C). Lightly grease a 9×13-inch baking dish.
2. Roast the veggies: Toss cauliflower, bell pepper, and red onion with oil, smoked paprika, a pinch of salt, and black pepper.

   Spread on a sheet pan and roast for 12–15 minutes until crisp-tender. This step keeps the casserole from getting watery.

3. Make the keto BBQ sauce blend: In a bowl, whisk BBQ sauce, mayonnaise, cream cheese, apple cider vinegar, garlic powder, onion powder, and cayenne. Stir until smooth.

   Taste and adjust salt and pepper.

4. Combine with chicken: In a large mixing bowl, add shredded chicken and the roasted veggies. Pour in the sauce and toss until everything is well coated.
5. Assemble the casserole: Spread the mixture into the baking dish. Sprinkle cheddar and mozzarella evenly on top.
6. Bake: Bake for 15–18 minutes, until the cheese is melted and bubbling around the edges.
7. Broil for color: If you like a golden top, switch to broil for 1–2 minutes.

   Watch closely so it doesn’t burn.

8. Rest and garnish: Let it sit for 5 minutes to set. Garnish with chopped parsley or green onions.
9. Serve: Spoon into bowls and enjoy as is, or pair with a simple green salad or roasted broccoli.

Keeping It Fresh

Leftovers keep well for 3–4 days in an airtight container in the fridge. Reheat in the oven at 325°F until warm, or use the microwave in short bursts.

For longer storage, freeze portions for up to 2 months. Thaw overnight in the fridge to maintain the best texture. If the sauce thickens after chilling, a small splash of chicken broth stirred in before reheating brings it back to life.

Health Benefits

• Low in carbs, high in protein: The chicken delivers steady energy without a carb crash.
• Healthy fats for satiety: Olive oil, mayo, and cheese help you feel full and satisfied, which can support weight management on keto.
• Micronutrient boost: Cauliflower and peppers bring fiber, vitamin C, vitamin K, and antioxidants.
• Controlled ingredients: Using no-sugar-added BBQ sauce helps avoid hidden sugars that can stall ketosis.

Pitfalls to Watch Out For

• Sneaky sugars in sauce: Some “low-carb” BBQ sauces still pack 7–10g per serving.

  Read labels and choose wisely.

• Watery casserole: Skip this by roasting veggies first and patting them dry, especially if using frozen cauliflower.
• Overbaking: Too long in the oven can dry out the chicken. Pull it when the cheese is melted and bubbly.
• Too salty: Cheese and BBQ sauce contain salt. Season lightly until after you taste the final mix.

Recipe Variations

• Bacon ranch twist: Swap half the BBQ sauce for ranch dressing (low-carb), and add 4 slices cooked, crumbled bacon.
• Buffalo BBQ hybrid: Mix 1–2 tablespoons hot sauce into the BBQ blend.

  Top with blue cheese crumbles after baking.

• Tex-Mex version: Add 1 teaspoon chili powder and 1/2 teaspoon cumin. Finish with sliced jalapeños and a dollop of sour cream.
• Green veggie boost: Stir in 2 cups chopped spinach or zucchini (salt and sauté first to avoid extra moisture).
• Dairy-light option: Use just 1/2 cup cheese on top and skip the cream cheese. Add 2 tablespoons olive oil to keep it moist.
• Slow cooker shortcut: Combine everything except the cheese in the slow cooker and heat on low for 2–3 hours.

  Stir, sprinkle cheese, cover until melted, then serve.

FAQ

Can I use raw chicken instead of cooked?

Yes, but cook it first to avoid releasing excess moisture into the casserole. Season chicken breasts or thighs with salt, pepper, and paprika, then bake or pan-cook until done. Shred or cube, then proceed with the recipe.

What’s the best no-sugar-added BBQ sauce?

Look for a sauce with clean ingredients and 1–3g net carbs per 2-tablespoon serving.

Popular options often use allulose, monk fruit, or erythritol for sweetness. If you’re sensitive to sweeteners, choose a version that’s lightly sweetened and test your tolerance.

Can I make this casserole ahead?

Absolutely. Assemble up to the cheese step, cover, and refrigerate for up to 24 hours.

When ready to bake, let it sit at room temperature for 15 minutes, then bake as directed, adding a few extra minutes if needed.

How do I keep the cauliflower from getting mushy?

Roast it first at high heat, and keep the florets small but not tiny. Pat dry if using frozen. Avoid overbaking the final casserole—pull it when the cheese melts and bubbles.

Is this spicy?

It’s mild by default.

For heat, include the cayenne, add jalapeños, or finish with a drizzle of hot sauce. For no heat, leave out the cayenne entirely.

What sides go well with this?

Keep it simple with a mixed greens salad, roasted asparagus, or sautéed green beans. If you want something heartier but still low-carb, try cauliflower mash or a cabbage slaw with a tangy dressing.

Can I use turkey instead of chicken?

Yes.

Shredded turkey works great and keeps the texture similar. It’s a good way to use holiday leftovers without changing the rest of the recipe.

How many servings and macros?

It serves about 6. Macros vary by sauce and cheese, but a typical serving lands around 330–400 calories, 6–9g net carbs, 22–28g fat, and 28–34g protein.

Check your labels for precise numbers.

Wrapping Up

Keto BBQ Chicken Casserole delivers smoky comfort with straightforward ingredients and weeknight-friendly steps. It’s easy to customize, stores well, and satisfies that barbecue craving without the sugar crash. Keep a batch in the fridge for quick meals, and don’t be afraid to tweak the spices and add-ins to match your taste.

Once you’ve tried it, this one is bound to become a regular in your low-carb rotation.