Creamy Keto Broccoli Chicken Casserole

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This Creamy Keto Broccoli Chicken Casserole is the ultimate comfort food for anyone following a low-carb lifestyle. Rich, cheesy, and loaded with tender chicken and fresh broccoli, it’s a complete meal baked into a bubbling golden casserole. Every forkful delivers a perfect harmony of creamy textures and savory flavors, making it a crowd-pleaser whether you’re meal prepping, hosting guests, or just craving a cozy dinner.

What makes this dish stand out is its versatility and simplicity. With a short prep time and minimal cleanup, it’s ideal for busy weeknights or lazy weekends. Plus, it’s high in protein and healthy fats, keeping you full and energized without the carb crash. This recipe also reheats beautifully, so it’s great for leftovers too.

Why You’ll Love This Creamy Keto Broccoli Chicken Casserole

• Perfect for low-carb and keto diets
• Family-friendly and picky-eater approved
• One-dish recipe for easy cleanup
• Cheesy, creamy, and satisfying
• Great for meal prep or freezer meals

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Preparation Phase & Tools to Use (Essential Tools and Equipment)

To make this casserole, you’ll need a few basic kitchen essentials:

• Large Mixing Bowl: For combining chicken, broccoli, cheese, and sauce thoroughly.
• 9×13 Casserole Dish: Ideal for even baking and serving.
• Cheese Grater: Freshly grated cheese melts better and avoids additives.
• Saucepan: Useful if you’re making a homemade cream sauce.
• Spatula or Wooden Spoon: For stirring the mixture without damaging the broccoli florets.
• Measuring Cups and Spoons: Ensures balanced flavors and correct ratios.

Each tool plays a key role in making prep efficient and ensuring the dish comes out perfectly creamy and evenly baked.

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Preparation Tips

Use cooked and shredded rotisserie chicken to save time and add extra flavor. If using frozen broccoli, be sure to steam or microwave it first and drain thoroughly to avoid excess water in the casserole. When making the sauce, whisk it well to avoid clumps, and taste-test before mixing it in. For a golden, bubbly top, broil the casserole for the last 2-3 minutes. Lastly, let it rest for 5-10 minutes after baking so the sauce thickens slightly for cleaner serving.

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Ingredients for this Creamy Keto Broccoli Chicken Casserole

• 3 cups cooked, shredded chicken (rotisserie works great)
• 4 cups fresh broccoli florets (lightly steamed or blanched)
• 1 1/2 cups shredded cheddar cheese
• 1 cup shredded mozzarella cheese
• 4 oz cream cheese, softened
• 1/2 cup sour cream
• 1/4 cup mayonnaise
• 1/4 cup grated Parmesan cheese
• 1/2 teaspoon garlic powder
• 1/2 teaspoon onion powder
• 1/4 teaspoon paprika (optional)
• Salt and pepper to taste
• 2 tablespoons chopped fresh parsley (for garnish)
• Cooking spray or butter (for greasing the baking dish)

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Step 1: Prepare the Chicken and Broccoli

Shred your cooked chicken into bite-sized pieces and lightly steam the broccoli until just tender but still vibrant green. If using frozen broccoli, thaw and drain well. Set both aside to cool slightly.

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Step 2: Mix the Creamy Sauce

In a large mixing bowl, combine the cream cheese, sour cream, mayonnaise, Parmesan, garlic powder, onion powder, paprika, salt, and pepper. Whisk or mix until smooth and creamy.

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Step 3: Combine All Ingredients

Add the shredded chicken and steamed broccoli into the bowl with the sauce. Stir everything together gently until all the pieces are evenly coated.

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Step 4: Assemble the Casserole

Grease a 9×13-inch casserole dish with butter or cooking spray. Pour the chicken and broccoli mixture into the dish and spread it out evenly. Top with the shredded cheddar and mozzarella cheeses.

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Step 5: Bake to Perfection

Preheat your oven to 375°F (190°C). Bake the casserole uncovered for 25-30 minutes, or until the cheese is melted, bubbly, and slightly golden brown on top.

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Step 6: Optional Broil and Garnish

If you want a crispier top, switch to broil mode for the last 2-3 minutes—watch it closely. Once out of the oven, sprinkle with freshly chopped parsley for a pop of color and freshness.

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Notes

You can easily customize this casserole based on your preferences or what you have on hand. Try adding mushrooms, spinach, or cauliflower for variety. Swapping cheddar with gouda or pepper jack also gives a different flavor twist. This recipe is naturally gluten-free and keto-friendly, but always double-check ingredient labels, especially for cream cheese and mayonnaise, to avoid hidden sugars or carbs.

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Watch Out for These Mistakes While Cooking

• Overcooking the broccoli: If it’s too soft, it will turn mushy in the oven. Steam lightly.
• Using watery vegetables: Frozen broccoli must be drained well, or it will water down the sauce.
• Skipping seasoning: The creamy base needs seasoning to avoid blandness. Taste the sauce before mixing.
• Using pre-shredded cheese: It often contains anti-caking agents that prevent smooth melting. Freshly grate for best results.

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Storage Instructions

Let the casserole cool completely before storing. Cover tightly and refrigerate for up to 4 days. Reheat in the oven at 350°F until warmed through, or microwave individual portions. For freezing, wrap the entire unbaked casserole in plastic wrap and foil, and freeze for up to 2 months. Thaw in the fridge overnight before baking as directed.

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Estimated Nutrition

• Calories per serving: ~410 kcal
• Protein: 28g
• Fat: 31g
• Carbohydrates: 6g
• Fiber: 2g
• Sugar: 2g
• Sodium: 480mg

(Note: Nutritional values are estimates and may vary based on specific ingredients used.)

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Frequently Asked Questions

Can I use canned chicken instead of fresh?

Yes, canned chicken works in a pinch, but fresh or rotisserie chicken has better texture and flavor.

Is this casserole freezer-friendly?

Absolutely. Assemble it and freeze before baking. Just thaw overnight and bake as instructed.

Can I make this dish dairy-free?

Yes, but it will require dairy-free alternatives for cheese, cream cheese, and sour cream. Taste and texture will vary.

How do I prevent the casserole from being watery?

Drain all vegetables well and avoid over-steaming. Also, avoid low-fat dairy, which tends to release more water.

Can I prep this ahead of time?

Definitely. You can assemble the casserole a day in advance, refrigerate it, and bake it fresh the next day.

What sides go well with this dish?

It pairs well with a green salad, roasted asparagus, or cauliflower rice.

Can I add bacon to this recipe?

Yes! Crumbled cooked bacon makes a delicious addition and adds extra crunch and flavor.

Is this recipe spicy?

Not inherently. You can add a pinch of red pepper flakes or use pepper jack cheese for heat.

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Conclusion

This Creamy Keto Broccoli Chicken Casserole is a lifesaver for anyone wanting a fast, satisfying, and wholesome meal without carbs getting in the way. Packed with protein, smothered in cheese, and bursting with flavor, it’s everything you want in a low-carb comfort dish. Whether for a weekday dinner or meal prep staple, this casserole brings both nourishment and taste to your table with ease.

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