If you’re on the lookout for a comforting, flavorful dish that fits perfectly into your low-carb lifestyle, the Keto Chicken Broccoli Casserole Recipe is here to wow your taste buds. This hearty casserole combines tender chicken, vibrant broccoli, and a luscious blend of cheeses all smothered in a creamy garlic sauce. It’s simple to whip up, irresistibly cheesy, and makes for a fantastic meal that satisfies without kicking you out of ketosis. Trust me, once you try this recipe, it’ll earn a happy spot in your weekly rotation.

Ingredients You’ll Need

The image shows six cooking ingredients laid out on a white marbled surface. On the left, there is a white plate with three pieces of cooked chicken, each light brown with some grill marks. Next to it is a small block of pale yellow Parmesan cheese. Above that is a glass measuring cup filled with heavy cream, off-white and smooth. To the right of the cup is a small glass bowl full of shredded mozzarella cheese, creamy white and soft. Above the bowl is a fresh, bright green broccoli head with textured florets and a thick stalk. Below the broccoli is a whole garlic bulb with off-white papery skin, and to the right of the garlic is a small slab of pale yellow butter with a smooth texture. photo taken with an iphone --ar 4:5 --v 7

Each ingredient in this Keto Chicken Broccoli Casserole Recipe is carefully chosen to build layers of flavor and texture, turning simple components into a magnificent dish. These staples work together to create creamy, cheesy comfort with just the right amount of veggie freshness.

Butter (2 tbsp, divided): Adds richness and helps sauté the broccoli and garlic to bring out their best flavors.
Broccoli (16 ounces, coarsely chopped): Brings vibrant color and a satisfying bite that perfectly balances the creamy sauce.
Garlic (4 cloves, minced): Infuses an aromatic punch that deepens every savory bite.
Heavy Whipping Cream (3/4 cup): The secret to a luscious sauce that clings to every ingredient.
Mozzarella Cheese (1 1/3 cups, shredded, divided): Melts smoothly for gooey goodness and that perfect golden crust on top.
Parmesan Cheese (1/3 cup, grated): Adds a sharp, salty contrast that enhances the creamy bed of flavors.
Salt and Pepper: Enhances the natural flavors for a balanced and satisfying taste.
Cooked, Chopped Chicken (1 1/2 lb or about 4 cups): The hearty protein base that makes this dish truly filling and keto-friendly.

How to Make Keto Chicken Broccoli Casserole Recipe

Step 1: Sauté the Broccoli

Start by heating a tablespoon of butter in a 10-inch ovenproof skillet over medium heat. Toss in your chopped broccoli and cook it just until it turns bright green and tender—this only takes about four minutes. This quick sauté keeps the broccoli crisp-tender and vibrant, which is essential since it’ll hold its texture after baking. Once done, set the broccoli aside in a bowl to keep it fresh for the next step.

Step 2: Prepare the Creamy Garlic Sauce

In the same skillet, melt the remaining butter and add the minced garlic. Stir and cook until the garlic releases its amazing fragrance—about one minute. Pour in the heavy whipping cream and let it simmer gently, reducing and thickening for three to five minutes. This rich base is what makes the casserole so indulgent yet perfectly keto-friendly. Then, stir in one-third cup of mozzarella and all the Parmesan cheese until everything is melted and silky smooth.

Step 3: Combine Chicken and Broccoli

Now, mix the sauce with the sautéed broccoli and chopped chicken right in the skillet. The heat from the pan and the creamy sauce marry the ingredients beautifully, coating them in a flavorful blanket that’s every bit as satisfying as it sounds. Season the mixture with salt and pepper to your liking, making sure it tastes just right before moving to the final stage.

Step 4: Top with Cheese and Broil

Scatter the remaining mozzarella cheese evenly over the casserole. Preheat your broiler and place the skillet about six inches from the heat source. Broil until the cheese bubbles and turns irresistible golden brown, which usually takes between two to five minutes. Keep a close eye on it—the perfect crust is just a moment away and is absolutely worth waiting for!

How to Serve Keto Chicken Broccoli Casserole Recipe

A close-up shows a wooden spoon lifting a cheesy broccoli dish from a white pan. The dish has bright green broccoli florets with yellow and white melted cheese stretching in thin strings from the pan. There are soft, light pieces of chicken mixed in with the broccoli and cheese. The wooden spoon holds a thick scoop with visible textures of tender broccoli and creamy cheese on top, all set against a white marbled surface. photo taken with an iphone --ar 4:5 --v 7

Garnishes

Sprinkle freshly chopped parsley or chopped chives over the hot casserole just before serving. These fresh herbs add a pop of color and a subtle hint of freshness that complements the richness perfectly. A light sprinkle of chili flakes can also bring a gentle heat if you’re feeling adventurous.

Side Dishes

This casserole pairs wonderfully with simple keto-friendly sides like a crisp green salad tossed in lemon vinaigrette or some roasted cauliflower for extra veggie goodness. If you want to keep it all keto but add more textures, a side of creamy mashed cauliflower can round out your plate deliciously.

Creative Ways to Present

For an eye-catching presentation, try serving individual portions in small ramekins or cast-iron skillets—perfect for dinner parties or cozy nights in. You can also layer the casserole over a bed of cauliflower rice to make it feel even more like a complete meal with a fun twist.

Make Ahead and Storage

Storing Leftovers

Any leftover Keto Chicken Broccoli Casserole Recipe can be stored in an airtight container in the refrigerator for up to 3 days. The flavors actually meld nicely overnight, so you might find it tastes even better the next day.

Freezing

This casserole freezes beautifully. Just place the cooled leftovers in a freezer-safe container and store for up to 2 months. When you’re ready to enjoy it again, thaw overnight in the fridge for best texture and flavor.

Reheating

To reheat, pop the casserole into the oven at 350°F (175°C) until warmed through, which usually takes around 15 to 20 minutes. This helps re-crisp the top. If you’re short on time, reheating in the microwave is okay, but the crust won’t be as crisp.

FAQs

Can I use frozen broccoli for this casserole?

Absolutely! Just make sure to thaw and drain the broccoli well to avoid extra water in the casserole, which could make it runny.

What kind of chicken works best?

Cooked, shredded or chopped chicken breast is perfect, but leftover rotisserie chicken also makes a flavorful shortcut to save time.

Is this recipe dairy-free or can it be made that way?

This dish relies heavily on cheese and cream, so it’s not suitable for a dairy-free diet. However, swapping for dairy-free cream alternatives and vegan cheese might work if you experiment cautiously.

Can I add other vegetables?

Sure thing! Cauliflower, mushrooms, or even spinach can be great additions, just adjust cooking times to keep textures balanced.

What if I don’t have an ovenproof skillet?

No worries! You can assemble everything in a regular skillet then transfer it to a baking dish for the broiling step.

Final Thoughts

This Keto Chicken Broccoli Casserole Recipe is a fantastic way to indulge in comfort food that aligns perfectly with your keto lifestyle. It’s simple, satisfying, and loaded with flavors that feel like a warm hug in every bite. Give it a try and watch how quickly it becomes a cherished favorite on your table!

Keto Chicken Broccoli Casserole Recipe

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4.2 from 2 reviews

Author: Sara
Total Time: 21 minutes
Yield: 6 servings
Diet: Low Carb

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Description

This Keto Chicken Broccoli Casserole is a creamy, cheesy dish perfect for low-carb and keto diets. Featuring tender chicken and bright broccoli in a rich garlic cream sauce, topped with melted mozzarella and parmesan cheeses, it’s a quick and satisfying meal made entirely on the stovetop and finished under the broiler for a golden, bubbly crust.

Ingredients

Vegetables & Aromatics

16 ounces broccoli, coarsely chopped
4 cloves garlic, minced

Dairy

2 tbsp butter, divided
3/4 cup heavy whipping cream
1 1/3 cups shredded mozzarella, divided
1/3 cup grated parmesan cheese

Protein

1 1/2 lb cooked, chopped chicken (about 4 cups)

Seasonings

Salt and pepper, to taste

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Instructions

Sauté Broccoli: Set a 10-inch ovenproof skillet over medium heat and add 1 tablespoon of butter. Once melted, add the coarsely chopped broccoli and sauté until bright green and just tender, about 4 minutes. Remove the broccoli to a bowl and set aside.
Cook Garlic & Cream: Melt the remaining tablespoon of butter in the same pan, then add the minced garlic and cook until fragrant, about 1 minute. Pour in the heavy whipping cream and bring it to a simmer. Let it cook until the cream thickens and reduces slightly, about 3 to 5 minutes.
Melt Cheeses: Stir in 1/3 cup of the shredded mozzarella and all of the grated parmesan cheese into the cream sauce until fully melted and combined. Season the sauce with salt and pepper to your taste.
Combine Ingredients: Add the sautéed broccoli and the chopped cooked chicken to the skillet with the cheese sauce. Stir until everything is well coated. Then, evenly top the mixture with the remaining 1 cup of shredded mozzarella cheese.
Broil: Preheat your broiler and position the skillet about 6 inches from the heat source. Broil until the cheese topping is golden brown and bubbling, about 2 to 5 minutes – watch carefully to avoid burning.

Notes

Use an ovenproof skillet to easily transfer from stovetop to broiler.
You can substitute cooked turkey or leftover roasted chicken in place of the chicken.
If you prefer, steam the broccoli instead of sautéing for a softer texture.
Adjust salt and pepper according to your dietary needs.
Broiling times vary by oven; watch carefully to prevent burning the cheese.

Prep Time: 10 minutes
Cook Time: 11 minutes
Category: Casserole
Method: Stovetop
Cuisine: American