Keto Chicken Alfredo Bake – Creamy, Comforting, and Low-Carb
This Keto Chicken Alfredo Bake delivers all the cozy, creamy flavors you love—without the carb crash. Tender chicken, crisp-tender broccoli, and a velvety garlic-Parmesan sauce come together under a bubbly, golden top. It’s weeknight-friendly, meal-prep approved, and satisfying enough to please non-keto eaters too.
If you crave pasta-night comfort but want to keep it low-carb, this bake hits the spot. Best of all, it uses simple ingredients and comes together in under an hour.
Ingredients
Method
- Preheat the oven: Set to 375°F (190°C). Lightly grease a 9x13-inch baking dish.
- Cook the veggies: Steam or microwave broccoli and cauliflower until crisp-tender, about 3–4 minutes. Drain well and pat dry. Excess water will thin the sauce.
- Prep the chicken: Use rotisserie or leftover cooked chicken. Shred or cube into bite-size pieces. Season lightly with salt and pepper.
- Start the Alfredo base: In a large skillet over medium heat, melt butter. Add garlic and cook 30–60 seconds until fragrant, not browned.
- Add liquids: Pour in heavy cream and chicken broth. Whisk in cream cheese until smooth. Simmer gently 3–4 minutes to thicken.
- Stir in cheeses and seasoning: Add Parmesan and 1 cup mozzarella. Whisk until melted. Season with Italian seasoning, onion powder, red pepper flakes if using, plus salt and black pepper. Taste and adjust.
- Combine: In a large bowl, toss chicken, broccoli, and cauliflower with the sauce until everything is evenly coated.
- Assemble: Transfer mixture to the baking dish. Top with remaining 1/2 cup mozzarella (or more for extra coverage).
- Bake: Bake 18–22 minutes until bubbly around the edges. For a golden top, broil 1–2 minutes at the end. Watch closely.
- Rest and serve: Let stand 5–10 minutes so the sauce sets. Garnish with parsley. Serve warm.
What Makes This Recipe So Good
- Ultra-creamy sauce: A rich Alfredo made with heavy cream, butter, garlic, and Parmesan coats every bite.
- Low-carb swap: Broccoli and cauliflower stand in for noodles, keeping it keto while still hearty.
- Family-friendly: Comforting, cheesy flavor without tasting “diet.” Great for mixed-diet households.
- Make-ahead option: Assemble it earlier in the day and bake when you’re ready to eat.
- Customizable: Add mushrooms, spinach, bacon, or different cheeses to make it your own.
What You’ll Need
- Chicken: 1.5 to 2 pounds cooked chicken breast or thighs, shredded or cubed
- Vegetables: 3 cups small broccoli florets; 2 cups small cauliflower florets (fresh or frozen)
- Butter: 4 tablespoons (salted or unsalted)
- Garlic: 3–4 cloves, minced
- Heavy cream: 1.5 cups
- Cream cheese: 4 ounces, softened
- Parmesan cheese: 1 cup, finely grated
- Mozzarella cheese: 1.5 cups, shredded (plus extra for topping if you like it extra cheesy)
- Chicken broth: 1/2 cup (low-sodium)
- Seasonings: 1 teaspoon Italian seasoning, 1/2 teaspoon onion powder, 1/2 teaspoon crushed red pepper (optional)
- Salt and black pepper: To taste
- Olive oil: 1 tablespoon (for sautéing, if needed)
- Fresh parsley: 2 tablespoons, chopped (optional garnish)
Step-by-Step Instructions
- Preheat the oven: Set to 375°F (190°C). Lightly grease a 9×13-inch baking dish.
- Cook the veggies: Steam or microwave broccoli and cauliflower until crisp-tender, about 3–4 minutes.
Drain well and pat dry. Excess water will thin the sauce.
- Prep the chicken: Use rotisserie or leftover cooked chicken. Shred or cube into bite-size pieces.
Season lightly with salt and pepper.
- Start the Alfredo base: In a large skillet over medium heat, melt butter. Add garlic and cook 30–60 seconds until fragrant, not browned.
- Add liquids: Pour in heavy cream and chicken broth. Whisk in cream cheese until smooth.
Simmer gently 3–4 minutes to thicken.
- Stir in cheeses and seasoning: Add Parmesan and 1 cup mozzarella. Whisk until melted. Season with Italian seasoning, onion powder, red pepper flakes if using, plus salt and black pepper.
Taste and adjust.
- Combine: In a large bowl, toss chicken, broccoli, and cauliflower with the sauce until everything is evenly coated.
- Assemble: Transfer mixture to the baking dish. Top with remaining 1/2 cup mozzarella (or more for extra coverage).
- Bake: Bake 18–22 minutes until bubbly around the edges. For a golden top, broil 1–2 minutes at the end.
Watch closely.
- Rest and serve: Let stand 5–10 minutes so the sauce sets. Garnish with parsley. Serve warm.
How to Store
- Refrigerate: Cool completely, then store in an airtight container for up to 4 days.
- Freeze: Freeze in portions for up to 2 months.
Thaw overnight in the fridge before reheating.
- Reheat: Oven at 325°F until hot, 15–20 minutes, loosely covered. For single servings, microwave at 50–70% power in 45-second bursts, stirring between each.
- Moisture tip: If reheated sauce seems too thick, splash in a little broth or cream to loosen.
Benefits of This Recipe
- Keto-friendly: Very low in carbs, high in satisfying fats and protein.
- Balanced meal: Includes lean protein and non-starchy vegetables in one pan.
- Great for meal prep: Holds up well in the fridge and reheats without getting mushy when veggies are properly drained.
- Flexible ingredients: Works with different cheeses, added greens, or leftover chicken.
- Comfort food feel: Rich, creamy, and cheesy, minus the pasta.
What Not to Do
- Don’t skip drying the veggies: Wet broccoli and cauliflower will water down the sauce and make the bake soupy.
- Don’t boil the cream: Keep it at a gentle simmer to avoid splitting the sauce.
- Don’t overseason early: Parmesan and broth add salt. Taste before adding more.
- Don’t overbake: Long oven time can dry out the chicken and break the sauce.
Bake just until bubbly.
- Don’t use pre-shredded cheese only: It often contains anti-caking agents. If possible, grate at least some cheese fresh for a smoother melt.
Alternatives
- Veg swaps: Use spinach, zucchini ribbons, or riced cauliflower instead of florets. Sauté zucchini briefly first to release moisture.
- Protein options: Turkey, rotisserie chicken, cooked Italian sausage, or shrimp (add shrimp in the last 10 minutes of baking so it doesn’t overcook).
- Dairy tweaks: Replace some heavy cream with half-and-half plus an extra ounce of cream cheese for body.
- Flavor boosters: Add crumbled bacon, sautéed mushrooms, a pinch of nutmeg, or a squeeze of lemon for brightness.
- Cheese mix: Try fontina, Gruyère, or Asiago with Parmesan for deeper flavor.
FAQ
Can I make this ahead?
Yes.
Assemble the bake up to the point of adding the cheese topping, cover, and refrigerate up to 24 hours. Add 5–10 extra minutes to the bake time since it starts cold.
Is this gluten-free?
Yes, it contains no flour or breadcrumbs. Always check labels on broth, cream cheese, and shredded cheese to confirm they’re gluten-free.
Can I use frozen vegetables?
You can.
Thaw completely, drain, and pat very dry. If still wet, spread on a sheet pan and bake 5–8 minutes at 375°F to remove excess moisture before mixing with the sauce.
How many carbs per serving?
Exact numbers vary by brands and portions, but generally you’ll get around 5–7 net carbs per serving. For precise macros, plug your ingredients into a nutrition calculator.
What if my sauce is too thin?
Simmer a few extra minutes to reduce, or whisk in another ounce of cream cheese.
Make sure the veggies are well-drained, as extra water will thin the bake.
Can I make it without cream cheese?
Yes, but the sauce will be looser. Reduce the broth by half and simmer the cream a bit longer, then add extra Parmesan for body.
How do I avoid a greasy sauce?
Use moderate heat, don’t over-reduce the cream, and whisk the cheeses in gradually. If fat separates, take off heat and whisk vigorously; a splash of warm broth can help emulsify.
What pan size works best?
A 9×13-inch dish is ideal for even heating and a nice sauce-to-topping ratio.
An 8×11-inch dish also works; add a couple minutes to the baking time.
Final Thoughts
Keto Chicken Alfredo Bake is the kind of low-carb recipe you’ll make on repeat. It’s simple, rich, and crowd-pleasing, with easy swaps to match what you have on hand. Keep the veggies dry, season thoughtfully, and don’t rush the sauce.
You’ll get a creamy, cheesy bake that tastes like classic comfort food—without the carbs you don’t want.
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