Keto Chicken Cauliflower Alfredo Bake – Creamy, Comforting, and Low-Carb
This is the kind of weeknight dinner that makes everyone happy. It’s rich, cheesy, and super satisfying, but still fits your low-carb goals. Tender chicken, roasted cauliflower, and a silky Alfredo-style sauce bake together under a bubbly, golden top.
It tastes like classic comfort food, without the heavy pasta. If you’re craving a creamy casserole that doesn’t weigh you down, this one’s a keeper.
Ingredients
Method
- Prep the oven and dish: Heat the oven to 400°F (200°C). Grease a 9x13-inch baking dish.
- Prep the cauliflower: Cut cauliflower into bite-size florets. Toss with olive oil, salt, and pepper on a sheet pan.
- Roast to tender-crisp: Roast 18–22 minutes, stirring once, until just tender with a little browning. You want some bite so it holds up in the bake.
- Make the Alfredo sauce base: In a large skillet over medium heat, melt butter. Add garlic and cook 30–60 seconds until fragrant.
- Add cream and broth: Pour in heavy cream and chicken broth. Bring to a gentle simmer, then reduce heat to low.
- Whisk in cheeses: Add cream cheese in small pieces, whisking until smooth. Stir in Parmesan. Simmer 3–5 minutes to thicken slightly. Season with 1/2 teaspoon salt, 1/2 teaspoon pepper, 1/2 teaspoon onion powder, and 1 teaspoon Italian seasoning. Add a pinch of red pepper flakes if you like heat.
- Combine with chicken: Stir the cooked chicken into the sauce and warm through. If the sauce seems too thick, add a splash more broth or cream. It should coat a spoon but still flow.
- Assemble the bake: Add roasted cauliflower to the baking dish. Pour the chicken Alfredo mixture over top and gently fold to coat. Sprinkle shredded mozzarella evenly over the surface.
- Bake: Lower oven temperature to 375°F (190°C). Bake 18–22 minutes, until the edges are bubbling.
- Broil for color (optional): Broil 1–2 minutes to brown the cheese lightly. Watch closely so it doesn’t burn.
- Rest and serve: Let it sit 5–10 minutes to set. Garnish with chopped parsley and a little extra Parmesan. Serve warm.
What Makes This Recipe So Good
- Low-carb comfort: You get the cozy feeling of Alfredo pasta, but with cauliflower stepping in for noodles.
- Easy to prep ahead: Cook the chicken and make the sauce in advance, then assemble and bake when you’re ready.
- Balanced and filling: Protein-rich chicken and a good dose of healthy fats keep you satisfied for hours.
- Flexible: Swap cheeses, add greens, or use rotisserie chicken—this recipe adapts to what you have.
- Family-friendly: The creamy sauce and mild flavors win over picky eaters.
Shopping List
- Cauliflower: 1 large head or two 12-ounce bags of florets
- Cooked chicken: 3 cups, shredded or diced (rotisserie works great)
- Butter: 4 tablespoons (salted or unsalted)
- Garlic: 3–4 cloves, minced
- Heavy cream: 1 3/4 cups
- Cream cheese: 4 ounces, softened
- Parmesan cheese: 1 cup, finely grated
- Mozzarella cheese: 1 1/2 cups, shredded
- Chicken broth: 1/2 cup (low-sodium preferred)
- Olive oil: 1–2 tablespoons
- Seasonings: Salt, black pepper, onion powder, Italian seasoning, red pepper flakes (optional)
- Fresh parsley: For garnish (optional)
How to Make It
- Prep the oven and dish: Heat the oven to 400°F (200°C). Grease a 9×13-inch baking dish.
- Prep the cauliflower: Cut cauliflower into bite-size florets.
Toss with olive oil, salt, and pepper on a sheet pan.
- Roast to tender-crisp: Roast 18–22 minutes, stirring once, until just tender with a little browning. You want some bite so it holds up in the bake.
- Make the Alfredo sauce base: In a large skillet over medium heat, melt butter. Add garlic and cook 30–60 seconds until fragrant.
- Add cream and broth: Pour in heavy cream and chicken broth.
Bring to a gentle simmer, then reduce heat to low.
- Whisk in cheeses: Add cream cheese in small pieces, whisking until smooth. Stir in Parmesan. Simmer 3–5 minutes to thicken slightly.
Season with 1/2 teaspoon salt, 1/2 teaspoon pepper, 1/2 teaspoon onion powder, and 1 teaspoon Italian seasoning. Add a pinch of red pepper flakes if you like heat.
- Combine with chicken: Stir the cooked chicken into the sauce and warm through. If the sauce seems too thick, add a splash more broth or cream.
It should coat a spoon but still flow.
- Assemble the bake: Add roasted cauliflower to the baking dish. Pour the chicken Alfredo mixture over top and gently fold to coat. Sprinkle shredded mozzarella evenly over the surface.
- Bake: Lower oven temperature to 375°F (190°C).
Bake 18–22 minutes, until the edges are bubbling.
- Broil for color (optional): Broil 1–2 minutes to brown the cheese lightly. Watch closely so it doesn’t burn.
- Rest and serve: Let it sit 5–10 minutes to set. Garnish with chopped parsley and a little extra Parmesan.
Serve warm.
Storage Instructions
- Refrigerator: Store leftovers in an airtight container for 3–4 days.
- Freezer: Freeze in a freezer-safe dish up to 2 months. Thaw overnight in the fridge before reheating.
- Reheat: Cover and warm in a 325°F (165°C) oven for 15–20 minutes, or microwave in short bursts. If it’s dry, add a splash of cream.
Why This is Good for You
- Low in carbs, high in satisfaction: Cauliflower keeps the carb count down while still giving the dish structure and volume.
- Protein-focused: Chicken provides lean protein to support muscle and keep you full.
- Healthy fats for steady energy: Cream, cheese, and butter deliver fats that align with keto and help curb cravings.
- Micronutrients from cauliflower: You’ll get fiber, vitamin C, and potassium in every serving.
Common Mistakes to Avoid
- Overcooking the cauliflower: If it’s too soft before baking, it can turn mushy.
Roast just to tender-crisp.
- Watery sauce: Don’t skip simmering. Let the cream and cheeses thicken to a velvety consistency before combining.
- Under-seasoning: Alfredo sauce needs salt and pepper. Taste and adjust before baking.
- Using pre-shredded cheese only: Pre-shredded can have anti-caking agents that affect melting.
Mix in some freshly grated Parmesan for a smoother sauce.
- Skipping the rest time: A brief rest helps the casserole set and keeps it from falling apart when served.
Recipe Variations
- Broccoli blend: Swap half the cauliflower for broccoli florets for color and variety.
- Bacon ranch: Add 4 slices cooked, crumbled bacon and 1–2 teaspoons dry ranch seasoning to the sauce.
- Spinach and artichoke: Stir in 2 cups fresh spinach and 1/2 cup chopped artichoke hearts (well-drained) before baking.
- Buffalo kick: Whisk 2–3 tablespoons buffalo sauce into the Alfredo and top with blue cheese crumbles after baking.
- Mushroom lover’s: Sauté 8 ounces sliced mushrooms in butter and fold into the mix for a deeper, savory flavor.
- Dairy tweak: For a lighter feel, replace 1/2 cup cream with unsweetened almond milk and reduce broth slightly to keep it thick.
FAQ
Can I use frozen cauliflower?
Yes. Thaw completely and pat very dry, then roast at a higher heat (425°F/220°C) for a few extra minutes to evaporate moisture. This helps prevent a watery casserole.
What’s the best chicken to use?
Rotisserie chicken is quick and flavorful, but any cooked, shredded or diced chicken works.
Leftover grilled or baked chicken breast is great, too.
Can I make this ahead?
Absolutely. Assemble the casserole without baking, cover, and refrigerate up to 24 hours. Add 5–10 extra minutes to the bake time since it will be cold.
Is this gluten-free?
Yes, as written it’s naturally gluten-free.
Just double-check labels on broth and seasonings to be sure.
How many carbs are in a serving?
Exact counts vary by brands, but expect roughly 6–9 net carbs per serving for a generous scoop. Track with your specific ingredients for accuracy.
Can I use half-and-half instead of heavy cream?
You can, but the sauce will be thinner and less rich. If you use half-and-half, simmer a bit longer and add an extra ounce of cream cheese to help thicken.
What pan size should I use?
A standard 9×13-inch baking dish works best.
If using a smaller dish, don’t overfill—use an extra ramekin for overflow.
How do I prevent the cheese from getting greasy?
Bake at 375°F and avoid overbaking. Using a mix of freshly grated Parmesan and low-moisture mozzarella helps keep the top melty, not oily.
Final Thoughts
Keto Chicken Cauliflower Alfredo Bake delivers everything you want from a cozy casserole—creamy sauce, tender bites, and a bubbly cheese top—without the carb-heavy pasta. It’s simple enough for a Tuesday night, but tasty enough to serve to guests.
Keep the basics in your pantry, and you’ll have an easy, reliable dinner anytime. Make it once, and it’ll fall into your regular rotation.
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