If you’re looking for a dinner that’s low-carb, family-approved, and incredibly easy to make, this Low Carb Chicken Casserole is the answer. It’s hearty, cheesy, packed with protein, and loaded with veggies—without pasta or grains. Best of all, it comes together in just 30 minutes, making it perfect for busy weeknights.

At my house, this recipe has quickly become a regular. I can prep it while the kids finish homework, and leftovers are always a hit for lunch the next day. The best part? No one even notices it’s low-carb—they’re too busy going back for seconds.

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Why You’ll Love This Recipe ❤️

• Keto-friendly: Completely grain- and pasta-free, but still filling and satisfying.
• Protein-packed: Chicken, bacon, and cheese deliver serious staying power.
• Veggie-loaded: Spinach and broccoli sneak in plenty of nutrients.
• Quick to prep: Using cooked chicken and bacon cuts the prep to minutes.
• Make-ahead friendly: Assemble it earlier in the day and bake when ready.

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Ingredients

For the casserole:

• 4 cups cooked, diced, or shredded chicken breast
• 8 slices cooked bacon, chopped
• 5 cups broccoli florets or 1 pound frozen spinach (well-drained)
• 3 cloves garlic, minced
• 1 cup ranch dressing
• ½ cup shredded mozzarella cheese
• ½ cup shredded cheddar cheese

For the topping:

• ½ cup shredded mozzarella cheese
• ½ cup shredded cheddar cheese

Optional:

• 1–3 teaspoons ranch seasoning mix for an extra flavor boost

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Step-by-Step Instructions

Step 1: Prep the veggies

• Preheat oven to 375°F (190°C).
• If using spinach: thaw fully and squeeze out as much liquid as possible.
• If using broccoli: boil for 2–3 minutes until bright green, then drain well.

Step 2: Mix the casserole base

• In a large bowl, combine chicken, bacon, prepared vegetables, garlic, ranch dressing, mozzarella, and cheddar. Stir well.
• Add ranch seasoning if desired.

Step 3: Assemble

• Spread mixture into a 9×13-inch (23×33 cm) casserole dish.
• Sprinkle the remaining mozzarella and cheddar evenly over the top.

Step 4: Bake

• Bake uncovered for 15–20 minutes, or until the cheese is melted and bubbly.
• Let rest for 5 minutes before serving.

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Tips for Success

• Drain veggies well: Excess water from spinach or broccoli can make the casserole watery.
• Cheese layering: Save some cheese for the topping to get that perfectly gooey, golden finish.
• Temperature control: Stick to 350–375°F to avoid splitting the ranch sauce.
• Tight on time? Use a rotisserie chicken for maximum convenience.

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Substitutions & Variations

• Protein: Swap chicken for turkey or even leftover rotisserie meat.
• Cheese: Try Monterey Jack, Colby, or provolone for a twist.
• Sauce: Replace ranch with a mix of sour cream and mayo plus Italian seasoning.
• Veggies: Switch broccoli for cauliflower, Brussels sprouts, or fresh spinach.

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Storage & Reheating

• Fridge: Store covered for up to 3 days.
• Freezer: Wrap tightly and freeze for up to 2 months. Thaw overnight before reheating.
• Reheat: Warm in the oven at 350°F until hot, or microwave individual portions.

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Nutrition (per serving, approx.)

• Calories: 500–600 kcal
• Protein: 45–50 g
• Fat: 35–40 g
• Carbs: 8–10 g

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Final Thoughts

This Low Carb Chicken Casserole is everything you want in a weeknight dinner—simple, flavorful, satisfying, and wholesome. It’s cheesy, hearty, and customizable, yet light enough to fit into keto or low-carb lifestyles. Serve it once, and you’ll quickly add it to your family’s regular dinner rotation.