Keto Buffalo Chicken Casserole – Creamy, Spicy, and Low-Carb Comfort
If you love bold flavors and easy weeknight dinners, this Keto Buffalo Chicken Casserole will be your new favorite. It brings all the spicy, tangy goodness of buffalo wings into a cheesy, hearty bake that fits your low-carb goals. The prep is simple, cleanup is minimal, and leftovers are even better the next day.
It’s the kind of meal you can throw together on a busy night and still feel like you made something special.
Ingredients
Method
- Preheat and prep: Heat your oven to 375°F (190°C). Grease a 9x13-inch baking dish with a little oil or butter.
- Sweat the cauliflower rice: In a large skillet over medium heat, add 1 tablespoon olive oil. Cook the riced cauliflower for 5–7 minutes to release moisture. Stir often. It should steam off and become slightly tender. Transfer to a large mixing bowl.
- Sauté the celery: In the same skillet, add the remaining oil. Sauté the celery for 3–4 minutes until crisp-tender. Add to the mixing bowl with the cauliflower.
- Make the creamy buffalo base: In a separate bowl, whisk together cream cheese, sour cream, buffalo sauce, garlic powder, onion powder, smoked paprika, pepper, and salt. Warm the cream cheese in the microwave for 15–20 seconds if needed to soften.
- Combine everything: Add shredded chicken, green onion, and half the mozzarella to the big mixing bowl with the veggies. Pour in the buffalo mixture and stir until everything is evenly coated.
- Assemble the casserole: Spread the mixture into the baking dish. Top with the remaining mozzarella and the crumbled blue cheese, if using.
- Bake: Place on the center rack and bake for 20–25 minutes, until the edges are bubbling and the cheese on top is melted and lightly golden.
- Finish and serve: Let it rest for 5–10 minutes so it sets. Garnish with extra green onion. Drizzle with ranch or blue cheese dressing if you like more creaminess. Serve hot.
What Makes This Special
This casserole brings together classic buffalo sauce, creamy ranch flavors, and tender chicken in a way that feels indulgent but stays low-carb. It’s versatile enough to use leftover or rotisserie chicken, which cuts down on prep time. You also get hidden veggies—cauliflower rice and celery—so you’re not just eating cheese and chicken.
And the texture is spot on: creamy base, cheesy top, and just enough bite from the buffalo heat.
Ingredients
- 3 cups cooked shredded chicken (rotisserie or poached)
- 3 cups riced cauliflower (fresh or frozen, defrosted and patted dry)
- 1 cup chopped celery
- 1/2 cup chopped green onion (plus more for garnish)
- 8 ounces cream cheese, softened
- 1/2 cup sour cream (or full-fat Greek yogurt)
- 1/2 cup buffalo hot sauce (like Frank’s RedHot; adjust to taste)
- 1 teaspoon garlic powder
- 1/2 teaspoon onion powder
- 1/2 teaspoon smoked paprika (optional, for depth)
- 1/4 teaspoon black pepper
- 1/4 to 1/2 teaspoon kosher salt (to taste)
- 1 1/2 cups shredded mozzarella
- 1/2 cup crumbled blue cheese (optional but classic)
- 2 tablespoons olive oil or butter (for sautéing)
- Ranch or blue cheese dressing, for drizzling (optional)
Step-by-Step Instructions
- Preheat and prep: Heat your oven to 375°F (190°C). Grease a 9×13-inch baking dish with a little oil or butter.
- Sweat the cauliflower rice: In a large skillet over medium heat, add 1 tablespoon olive oil. Cook the riced cauliflower for 5–7 minutes to release moisture.
Stir often. It should steam off and become slightly tender. Transfer to a large mixing bowl.
- Sauté the celery: In the same skillet, add the remaining oil.
Sauté the celery for 3–4 minutes until crisp-tender. Add to the mixing bowl with the cauliflower.
- Make the creamy buffalo base: In a separate bowl, whisk together cream cheese, sour cream, buffalo sauce, garlic powder, onion powder, smoked paprika, pepper, and salt. Warm the cream cheese in the microwave for 15–20 seconds if needed to soften.
- Combine everything: Add shredded chicken, green onion, and half the mozzarella to the big mixing bowl with the veggies.
Pour in the buffalo mixture and stir until everything is evenly coated.
- Assemble the casserole: Spread the mixture into the baking dish. Top with the remaining mozzarella and the crumbled blue cheese, if using.
- Bake: Place on the center rack and bake for 20–25 minutes, until the edges are bubbling and the cheese on top is melted and lightly golden.
- Finish and serve: Let it rest for 5–10 minutes so it sets. Garnish with extra green onion.
Drizzle with ranch or blue cheese dressing if you like more creaminess. Serve hot.
Storage Instructions
- Refrigerator: Store leftovers in an airtight container for up to 4 days. Reheat in the microwave or cover and warm in a 325°F (165°C) oven until hot.
- Freezer: Freeze in portions for up to 2 months.
Thaw in the fridge overnight before reheating. Add a splash of cream or a bit of cheese if it looks dry.
- Make-ahead: Assemble up to 24 hours in advance, cover, and refrigerate. Bake straight from the fridge, adding 5–10 extra minutes.
Why This is Good for You
- Low in carbs, high in protein: Keeps you full and supports muscle maintenance while staying keto-friendly.
- Balanced fats: Cream cheese and sour cream add satisfying fats that help with satiety on a ketogenic diet.
- Hidden veggies: Cauliflower rice and celery boost fiber and micronutrients without spiking carbs.
- Customizable heat and dairy levels: You can tailor the sauce and cheeses to your preferences and dietary needs.
Pitfalls to Watch Out For
- Too much moisture: If you skip sautéing or drying the cauliflower rice, the casserole can get watery.
Cook off moisture first.
- Over-salting: Buffalo sauce, cheese, and rotisserie chicken can be salty. Taste the mixture before adding more salt.
- Using very hot sauce without balance: If your buffalo sauce is extra spicy, add more sour cream or a splash of heavy cream to keep it enjoyable.
- Dry chicken: Overcooked or very lean chicken breast can be stringy. Rotisserie or thigh meat stays juicier.
Recipe Variations
- Bacon Ranch Buffalo: Add 4 slices cooked, crumbled bacon and 1 tablespoon dry ranch seasoning to the mixture.
- Veggie Boost: Stir in 1 cup chopped steamed broccoli or spinach (well squeezed dry) for extra greens.
- Dairy-Light: Swap sour cream for full-fat Greek yogurt, and use less cheese on top.
Add 2–3 tablespoons mayo for creaminess.
- Extra Cheesy: Mix in 1/2 cup shredded sharp cheddar with the mozzarella for deeper flavor.
- Heat Levels: For mild, use 1/3 cup buffalo sauce plus 1–2 tablespoons melted butter. For hot, go up to 3/4 cup sauce and add a pinch of cayenne.
- Ranch-Lover’s Topping: Sprinkle with crushed pork rinds mixed with 1 teaspoon ranch seasoning for a crunchy finish during the last 10 minutes of baking.
FAQ
Can I use canned chicken?
Yes, but drain it well and break up any large chunks. The texture won’t be as tender as rotisserie or poached chicken, but it works in a pinch.
What buffalo sauce is best for keto?
Choose a sauce with no added sugar and simple ingredients.
A classic cayenne pepper hot sauce like Frank’s RedHot is a reliable option.
How do I make it less spicy?
Use less buffalo sauce and add more sour cream or cream cheese. You can also drizzle with ranch after baking to mellow the heat.
Can I make this without cauliflower?
Yes. Replace the cauliflower rice with chopped steamed broccoli or sautéed zucchini (well-drained).
Keep moisture low to avoid a watery casserole.
Is this good for meal prep?
Absolutely. It reheats well and holds up for several days. Portion it into containers for quick lunches or dinners.
How do I cook the chicken if I don’t have leftovers?
Poach chicken breasts in salted water for 12–15 minutes until cooked through, then shred.
Or roast thighs at 400°F (205°C) for 25–30 minutes and chop.
Can I skip the blue cheese?
Yes. Use all mozzarella or swap in a bit of cheddar or Monterey Jack. You’ll still get that classic buffalo vibe from the sauce.
What can I serve with it?
Keep it simple with a green salad, cucumber slices with ranch, or roasted asparagus.
All are low-carb and pair well with the richness.
Wrapping Up
This Keto Buffalo Chicken Casserole brings big flavor with minimal effort. It’s creamy, comforting, and easy to customize to your spice tolerance and pantry. Whether you’re feeding a crowd or stocking the fridge for the week, it’s a practical, tasty option that keeps carbs in check without feeling like a compromise.
Make it once, and it’ll earn a regular spot in your dinner rotation.
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