Description
This Keto Chicken Broccoli Casserole is a rich, creamy, and comforting low-carb dinner that comes together in just 25 minutes. Loaded with tender chicken, vibrant broccoli, and a cheesy Alfredo sauce, it’s the perfect high-protein one-pan meal for busy weeknights.
Ingredients
2 cups cooked chicken, shredded or cubed
16 oz broccoli florets (about 3 cups)
1 cup heavy whipping cream
1 ½ cups mozzarella cheese, divided
½ cup freshly grated Parmesan cheese
3 tablespoons butter
2 cloves garlic, minced
½ teaspoon salt, or to taste
¼ teaspoon black pepper
Optional: pinch of red pepper flakes or cooked bacon bits for extra flavor
Instructions
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Sauté the Broccoli
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Melt 1 tablespoon of butter in a large oven-safe skillet over medium heat.
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Add broccoli florets and cook for 3–4 minutes until bright green and just tender.
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Remove from the pan and set aside.
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Make the Alfredo Sauce
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Add the remaining 2 tablespoons butter to the same skillet.
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Stir in minced garlic and cook for 30 seconds until fragrant.
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Pour in heavy cream and let it simmer 3–4 minutes, stirring occasionally, until slightly reduced.
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Add the Cheese
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Lower the heat and add Parmesan and 1 cup of mozzarella.
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Stir until melted and smooth. Season with salt and pepper.
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Combine Chicken and Broccoli
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Return broccoli to the skillet and add cooked chicken.
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Mix until everything is evenly coated with sauce.
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Top and Broil
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Sprinkle the remaining ½ cup mozzarella on top.
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Broil 2–3 minutes or bake at 400°F (200°C) until the cheese is golden and bubbly.
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Serve & Enjoy
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Let cool slightly before serving. This dish pairs perfectly with a simple green salad or cauliflower rice.
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Notes
- Make-Ahead Option: Assemble the casserole up to 2 days in advance. Cover and refrigerate until ready to bake.
- Frozen Broccoli Tip: If using frozen broccoli, thaw completely and skip the sauté step — add it straight to the sauce.
- Extra Creaminess: Add 2 oz cream cheese to the sauce if you prefer a thicker texture.
- Storage: Store leftovers in an airtight container for up to 5 days. Reheat in the oven or microwave until hot.
- Freezer Friendly: Freeze portions for up to 2 months. Thaw overnight in the fridge before reheating.
- Prep Time: 10 min
- Cook Time: 15 min
- Method: Baking
- Cuisine: American