Keto Buffalo Chicken Cauliflower Casserole – Creamy, Spicy, and Low-Carb Comfort
Buffalo chicken cravings don’t have to mean carb-heavy sides or complicated prep. This casserole delivers all the bold, tangy heat you love with a creamy, cheesy finish—and it stays perfectly keto-friendly. It’s weeknight easy, game-day worthy, and makes great leftovers.
If you want a dish that’s comforting without the carb crash, this one’s a keeper.
Keto Buffalo Chicken Cauliflower Casserole - Creamy, Spicy, and Low-Carb Comfort
Ingredients
Method
- Prep and preheat: Heat the oven to 375°F (190°C). Lightly grease a 9x13-inch baking dish.
- Cook the cauliflower: Steam or microwave the florets until crisp-tender, about 5–7 minutes. You want them slightly undercooked so they don’t go mushy in the oven. Pat dry with paper towels to remove excess moisture.
- Make the buffalo sauce: In a skillet over medium heat, melt the butter. Add garlic and cook 30 seconds. Stir in hot sauce, cream cheese, and dressing. Whisk until smooth and creamy, 2–3 minutes. Season with onion powder, paprika, salt, and pepper. Adjust heat by adding more hot sauce if desired.
- Combine: In a large bowl, toss the chicken and cauliflower with the sauce until everything is well coated. Fold in 1/2 cup cheddar and the mozzarella.
- Assemble: Spread the mixture into the prepared baking dish. Top with the remaining 1/2 cup cheddar.
- Bake: Bake for 18–22 minutes, until hot and bubbling around the edges. For a deeper golden top, broil for 1–2 minutes at the end, watching closely.
- Finish and serve: Let rest 5 minutes to set. Sprinkle with green onions and blue cheese crumbles if using. Serve warm with extra hot sauce on the side.
Why This Recipe Works
This casserole brings together simple, everyday ingredients that pack a lot of flavor with very little effort. Cauliflower acts as a low-carb stand-in for potatoes or pasta, giving you that satisfying bite without the carbs. Rotisserie chicken or leftover chicken makes prep fast, and a creamy buffalo sauce ties it all together.
A melted cheese topping finishes the dish with a golden, bubbly crust that’s hard to resist.
- Balanced heat and creaminess: Hot sauce and ranch or blue cheese dressing create a spicy-tangy base that’s mellowed by cream cheese and cheddar.
- Low-carb and high-protein: Chicken and cheese bring the protein, while cauliflower keeps net carbs in check.
- Meal-prep friendly: It reheats well and keeps its texture, making it ideal for lunches and busy nights.
- Flexible: Use the chicken you have, adjust the heat level, and add low-carb veggies if you like.
Ingredients
- 1 large head cauliflower, cut into small florets (about 5–6 cups)
- 3 cups cooked chicken, shredded or chopped (rotisserie works great)
- 3/4 cup buffalo hot sauce (like Frank’s RedHot), plus more to taste
- 1/2 cup ranch dressing or blue cheese dressing (sugar-free if possible)
- 6 oz cream cheese, softened
- 1 cup shredded sharp cheddar cheese, divided
- 1/2 cup shredded mozzarella cheese
- 2 tbsp unsalted butter
- 2 cloves garlic, minced
- 1/2 tsp onion powder
- 1/4 tsp smoked paprika (optional)
- Salt and black pepper to taste
- 2 tbsp chopped green onions, for garnish
- 2 tbsp crumbled blue cheese, for garnish (optional)
- Nonstick spray or a little oil for the baking dish
Instructions
- Prep and preheat: Heat the oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish.
- Cook the cauliflower: Steam or microwave the florets until crisp-tender, about 5–7 minutes. You want them slightly undercooked so they don’t go mushy in the oven.
Pat dry with paper towels to remove excess moisture.
- Make the buffalo sauce: In a skillet over medium heat, melt the butter. Add garlic and cook 30 seconds. Stir in hot sauce, cream cheese, and dressing.
Whisk until smooth and creamy, 2–3 minutes. Season with onion powder, paprika, salt, and pepper. Adjust heat by adding more hot sauce if desired.
- Combine: In a large bowl, toss the chicken and cauliflower with the sauce until everything is well coated.
Fold in 1/2 cup cheddar and the mozzarella.
- Assemble: Spread the mixture into the prepared baking dish. Top with the remaining 1/2 cup cheddar.
- Bake: Bake for 18–22 minutes, until hot and bubbling around the edges. For a deeper golden top, broil for 1–2 minutes at the end, watching closely.
- Finish and serve: Let rest 5 minutes to set.
Sprinkle with green onions and blue cheese crumbles if using. Serve warm with extra hot sauce on the side.
How to Store
- Refrigerator: Store leftovers in an airtight container for 3–4 days. Reheat in the microwave in 60–90 second bursts or in a 325°F (165°C) oven until warmed through.
- Freezer: Freeze in a freezer-safe container for up to 2 months.
Thaw overnight in the fridge, then reheat covered at 325°F (165°C) until hot.
- Make-ahead: Assemble the casserole up to the baking step, cover, and refrigerate for up to 24 hours. Add 5–10 minutes to the bake time if going in cold.
Health Benefits
- Keto-friendly macros: Cauliflower keeps carbs low while chicken and cheese deliver protein and fat for steady energy.
- Fiber and micronutrients: Cauliflower provides fiber, vitamin C, vitamin K, and folate, which support digestion and immune health.
- Satiety: The combination of protein, fat, and fiber helps you feel full and satisfied, which can support weight management.
- Gluten-free: Naturally gluten-free when you choose dressings without hidden sugars or thickeners.
Common Mistakes to Avoid
- Overcooking the cauliflower: If it’s too soft before baking, the casserole can turn watery. Keep it crisp-tender.
- Skipping the pat-dry step: Excess moisture dilutes the sauce.
Blot the florets after steaming.
- Using sweetened dressings: Some ranch or blue cheese dressings contain added sugar. Choose a low-carb, sugar-free option.
- Not seasoning enough: Taste the sauce before combining. Add salt, pepper, or more hot sauce as needed.
- Too much cheese on top: A mountain of cheese can trap steam and make the casserole greasy.
Stick to the amounts listed.
Recipe Variations
- Extra veggie boost: Add chopped celery or bell peppers (sautéed briefly) for crunch and color.
- Ranch-forward: Use all ranch dressing and skip blue cheese for a milder, herby flavor.
- Blue cheese lover’s: Stir 1/4 cup crumbled blue cheese into the sauce for more tang.
- Bacon upgrade: Add 4 slices cooked, crumbled bacon to the mixture or sprinkle on top before baking.
- Spice level control: Swap part of the hot sauce with mild wing sauce, or add cayenne for more heat.
- Dairy-light version: Reduce cheddar by half and swap cream cheese for 4 oz mascarpone for a silkier, slightly lighter feel.
- Different protein: Try shredded turkey, ground chicken, or even cooked shrimp (fold in after baking to avoid overcooking).
FAQ
Can I use frozen cauliflower?
Yes, but thaw it first and drain very well. Pat dry to remove as much moisture as possible. You may need to bake a few extra minutes to evaporate excess water.
What’s the best hot sauce for this recipe?
A classic buffalo-style hot sauce like Frank’s RedHot works best.
It’s tangy, not just spicy, which gives you that signature buffalo flavor. Avoid sweet chili sauces to keep carbs low.
Can I make this casserole without dairy?
You can, but the texture and flavor will change. Use a dairy-free cream cheese substitute, a vegan ranch, and a dairy-free shredded cheese that melts well.
Check labels for carbs and additives.
How do I keep the casserole from getting watery?
Undercook the cauliflower slightly, pat it dry, and avoid covering the dish while baking. If needed, broil at the end to help evaporate excess moisture and brown the top.
Is rotisserie chicken okay on keto?
Yes. Most plain rotisserie chickens are keto-friendly.
Just avoid sweet glazes or flavors like honey barbecue. Remove the skin if it’s heavily seasoned with sugar-based rubs.
Can I make it spicier?
Absolutely. Add extra hot sauce, a pinch of cayenne, or diced jalapeños.
Taste the sauce before mixing everything together and adjust to your heat preference.
What can I serve with it?
Keep sides simple and low-carb: a crisp green salad with ranch, roasted asparagus, or sautéed zucchini. A side of celery sticks with blue cheese dressing also fits the buffalo theme.
In Conclusion
This Keto Buffalo Chicken Cauliflower Casserole delivers bold flavor, satisfying texture, and weeknight convenience—all with keto-friendly macros. It’s flexible enough for meal prep and special enough for guests who love a little heat.
Keep the cauliflower crisp-tender, season the sauce well, and finish with a bubbly cheese top. You’ll have a spicy, creamy favorite that earns a spot in your regular rotation.
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