Keto Chicken Alfredo Broccoli Bake

By Jenna Carraway

On March 7, 2026

A close-up shot of the creamy keto alfredo sauce simmering in a skillet with chicken and broccoli florets before baking.

Cuisine

American, Italian

Prep time

15 minutes

Cooking time

25 minutes

Total time

40 minutes

Servings

6 servings

Craving a rich, creamy, and deeply satisfying meal without the carbs? This Keto Chicken Alfredo Broccoli Bake is your answer. It delivers all the comforting flavors of classic chicken alfredo in a simple, one-pan casserole that’s perfect for a weeknight dinner. We’ve perfected this recipe to ensure it’s not only incredibly delicious but also easy for any home cook to master. Get ready to add a new staple to your low-carb recipe collection that the whole family will love.

Why This Keto Chicken Alfredo Bake is a Must-Try

This isn’t just another low-carb recipe; it’s a game-changer for anyone following a ketogenic diet. It’s packed with protein, healthy fats, and flavor, ensuring you stay full and satisfied. Unlike traditional alfredo dishes, this bake uses a rich, homemade keto alfredo sauce that’s completely free of starches and fillers. Plus, it’s a fantastic way to get a hearty serving of vegetables. If you love quick chicken dinners like our Cowboy Butter Chicken Bites, you’ll appreciate how simple and delicious this bake is.

The Key Ingredients for Your Casserole

The magic of this dish lies in its simple, high-quality ingredients. We’re using fresh, whole foods to create a bake that’s both nutritious and flavorful.

For the Casserole

  • Chicken Breast: Boneless, skinless chicken breast, cut into bite-sized pieces, provides the protein backbone of this dish.
  • Broccoli Florets: Fresh broccoli adds a wonderful texture, flavor, and a dose of essential nutrients.
  • Mozzarella Cheese: Shredded mozzarella melts beautifully, creating that irresistible cheesy topping.

For the Keto Alfredo Sauce

  • Butter: Use unsalted butter as the rich base for our sauce.
  • Heavy Cream: This is the key to a luxuriously creamy, low-carb sauce.
  • Cream Cheese: Adds extra creaminess, a slight tang, and helps to thicken the sauce without flour.
  • Garlic: Freshly minced garlic provides the best flavor.
  • Parmesan Cheese: Freshly grated Parmesan cheese melts smoothly and adds a nutty, salty flavor. Avoid pre-shredded cheese with anti-caking agents.
  • Seasoning: A simple mix of salt, black pepper, and Italian seasoning is all you need.

Step-by-Step Instructions for the Perfect Bake

Follow these simple steps to create a flawless Keto Chicken Alfredo Broccoli Bake every single time. It’s a straightforward process that yields restaurant-quality results.

Step 1: Prep Your Ingredients

Start by preheating your oven to 375°F (190°C). Cut your chicken into 1-inch cubes and chop your broccoli into bite-sized florets. Mince the garlic and grate the Parmesan cheese. Having everything ready makes the cooking process smooth and enjoyable.

Step 2: Cook the Chicken

In a large skillet, melt a tablespoon of butter over medium-high heat. Add the chicken pieces, season with salt and pepper, and cook until golden brown and cooked through, about 5-7 minutes. Once cooked, remove the chicken from the skillet and set it aside.

A scoop of the finished Keto Chicken Alfredo Broccoli Bake on a white plate, showing the melted cheese and creamy interior.
Look at that cheesy, creamy perfection!

Step 3: Make the Creamy Keto Alfredo Sauce

In the same skillet, melt the remaining butter over medium heat. Add the minced garlic and cook until fragrant, about 30 seconds. Reduce the heat to low and whisk in the heavy cream and softened cream cheese. Continue whisking until the cream cheese has completely melted and the sauce is smooth. Stir in the grated Parmesan cheese until it melts. Season with salt, pepper, and Italian seasoning.

Step 4: Assemble and Bake the Casserole

Return the cooked chicken to the skillet with the sauce. Add the fresh broccoli florets and stir everything together until the chicken and broccoli are fully coated. Transfer the mixture to a 9×13 inch baking dish. Sprinkle the shredded mozzarella cheese evenly over the top. Bake for 20-25 minutes, or until the sauce is bubbly and the cheese is golden brown on top.

Pro Tips for the Best Keto Alfredo Bake

Want to elevate your Keto Chicken Alfredo Broccoli Bake? Here are a few expert tips:

  • Use Fresh Broccoli: While frozen works in a pinch, fresh broccoli provides a much better texture. If you must use frozen, thaw it and pat it dry to avoid a watery sauce.
  • Grate Your Own Cheese: Pre-shredded cheeses often contain potato starch or other additives to prevent caking, which can make your sauce grainy. Grating your own Parmesan and mozzarella ensures the smoothest, meltiest result.
  • Don’t Overcook: The bake is ready when the cheese is melted and bubbly. Overbaking can cause the sauce to separate.

Delicious Variations to Try

This Keto Chicken Alfredo Broccoli Bake is fantastic as is, but it’s also wonderfully versatile. Feel free to customize it to your liking!

  • Add Bacon: For a smoky flavor, add some crumbled cooked bacon to the mixture before baking.
  • Include Mushrooms: Sautéed mushrooms are a wonderful, earthy addition. Cook them with the chicken.
  • Spice it Up: Add a pinch of red pepper flakes to the alfredo sauce for a little kick of heat. The cheesy goodness is reminiscent of a comforting White Cheddar Mac and Cheese, but with a spicy twist!
A close-up shot of the creamy keto alfredo sauce simmering in a skillet with chicken and broccoli florets before baking.
The secret to this dish is the rich and creamy homemade keto alfredo sauce.

Storage and Reheating Instructions

This casserole makes for fantastic leftovers. To store, allow it to cool completely and then cover the baking dish tightly with foil or transfer it to an airtight container. It will keep in the refrigerator for up to 4 days.

To reheat, you can warm individual portions in the microwave. For the best results, reheat the casserole in a 350°F (175°C) oven until warmed through, which helps maintain its creamy texture.

What to Serve with Your Bake

This Keto Chicken Alfredo Broccoli Bake is a complete meal on its own, but it also pairs well with a simple side salad with a light vinaigrette. For another great low-carb option, you could even serve it alongside our Fat-Burning Cabbage Soup.

Frequently Asked Questions

Yes, but fresh broccoli is highly recommended for the best texture. If you use frozen broccoli, make sure to thaw it and pat it completely dry to prevent a watery sauce.

The best way to ensure a smooth sauce is to use freshly grated Parmesan cheese from a block. Pre-shredded cheeses often contain anti-caking agents that can cause a grainy texture when melted.

Store leftovers in an airtight container in the refrigerator for up to 4 days. Reheat in the microwave or, for best results, in an oven at 350°F (175°C) until warmed through.

Yes, this recipe is naturally gluten-free as it uses no flour or wheat-based thickeners in the sauce.

This bake is a full meal on its own, but it pairs wonderfully with a simple green salad, steamed asparagus, or cauliflower rice.

Share Your Creation!

We are so excited for you to try this Keto Chicken Alfredo Broccoli Bake recipe! It’s a true comfort food classic, reimagined for a healthy, low-carb lifestyle. If you make it, please leave a comment below and let us know what you think. We love hearing from you! Don’t forget to save this recipe to your favorite board on Pinterest!

A top-down view of a golden-brown Keto Chicken Alfredo Broccoli Bake in a white casserole dish, ready to be served.
This Keto Chicken Alfredo Broccoli Bake is the ultimate low-carb comfort food!

Keto Chicken Alfredo Broccoli Bake Recipe

A close-up shot of the creamy keto alfredo sauce simmering in a skillet with chicken and broccoli florets before baking.

Keto Chicken Alfredo Broccoli Bake

The ultimate creamy, cheesy, and low-carb Keto Chicken Alfredo Broccoli Bake. This easy one-pan casserole is packed with flavor and perfect for a satisfying weeknight dinner that the whole family will enjoy.
Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings: 6 servings
Course: Dinner, Main Course
Cuisine: American, Italian
Calories: 650

Ingredients
  

  • 2 lbs boneless, skinless chicken breast cut into 1-inch cubes
  • 4 cups fresh broccoli florets
  • 4 tbsp unsalted butter
  • 3 cloves garlic minced
  • 1.5 cups heavy cream
  • 4 oz cream cheese softened and cubed
  • 1 cup grated Parmesan cheese freshly grated
  • 1 tsp Italian seasoning
  • 1 tsp salt or to taste
  • 0.5 tsp black pepper or to taste
  • 2 cups shredded mozzarella cheese

Equipment

  • 1 9x13 inch Baking Dish
  • 1 Large Skillet

Instructions
 

  1. Preheat your oven to 375°F (190°C). Prepare your chicken, broccoli, and garlic as directed.
  2. In a large skillet, melt 1 tablespoon of butter over medium-high heat. Add the chicken, season with salt and pepper, and cook until golden and cooked through (5-7 minutes). Remove chicken and set aside.
  3. In the same skillet, melt the remaining 3 tablespoons of butter over medium heat. Add garlic and cook for 30 seconds until fragrant. Reduce heat to low, then whisk in the heavy cream and cream cheese until smooth. Stir in the Parmesan cheese until melted. Season with Italian seasoning, salt, and pepper.
  4. Return the cooked chicken to the skillet. Add the broccoli florets and stir to coat everything evenly in the sauce.
  5. Transfer the mixture to a 9x13 inch baking dish. Top with the shredded mozzarella cheese. Bake for 20-25 minutes, until the sauce is bubbly and the cheese is golden brown.

Notes

For the best texture, use fresh broccoli instead of frozen.
Grating your own cheese from a block will result in a smoother, creamier sauce.
Let the casserole rest for 5 minutes before serving to allow the sauce to set.

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