Low Carb Chicken Casserole
This Low Carb Chicken Casserole is the ultimate comfort food for home cooks who crave cheesy, creamy goodness without the carb overload. It's perfect for busy weeknights, potluck dinners, or cozy family gatherings when you want a hearty meal that's both satisfying and diet-friendly. The rich blend of melted cheeses and tender chicken wrapped in a velvety sauce makes it irresistibly indulgent, while the steamed broccoli adds a fresh contrast that balances every bite.
What Makes This Recipe Special
- Uses a mix of cream cheese, sour cream, and mayo for a silky sauce that clings to every piece of chicken and broccoli without separating.
- Steaming the broccoli just before mixing ensures it stays bright green and tender-crisp, not mushy, in the final casserole.
- A 25-30 minute bake at 375°F delivers a perfectly golden, bubbly top without overcooking the chicken or drying out the edges.
- Optional Parmesan topping adds a nutty crunch and umami depth, making every forkful even more crave-worthy.
Ingredients
3 cupscooked chicken breast, shredded or chopped
1 bag(12 ounces) frozen broccoli florets, steamed and drained
1 cupshredded cheddar cheese
1/2 cupcream cheese, softened
1/2 cupsour cream
1/4 cupmayonnaise
1 teaspoongarlic powder
1/2 teaspoononion powder
Salt and pepper, to taste
1/4 cupgrated Parmesan cheese (optional)
Nutrition
500 caloriesCalories
Per serving · Values are estimates
Instructions
1
Preheat oven to 375°F. Lightly grease a 9x13-inch baking dish.
2
Combine cream cheese, sour cream, mayonnaise, garlic powder, onion powder, salt, and pepper in a large bowl. Mix until smooth and fully blended.
3
Add the cooked chicken, steamed broccoli, and shredded cheddar cheese into the creamy mixture. Stir until all components are evenly coated.
4
Transfer the mixture into the prepared baking dish and spread evenly. Sprinkle grated Parmesan cheese on top if desired.
5
Bake uncovered for 25 to 30 minutes until heated through and the top is golden and bubbly.
Essential Tips
Skip pre-thawing broccoli
Skip thawing the frozen broccoli entirely. Steam it straight from frozen after a quick rinse to remove excess ice crystals. This prevents sogginess and locks in texture.
Use room-temp cream cheese
Let the cream cheese soften at room temperature for 30 minutes before mixing. Cold cream cheese can seize and create lumps, making the sauce grainy instead of smooth.
Shred chicken while warm
Shred the chicken while it's still warm from cooking. The juices help the meat fall apart more easily, resulting in finer, more tender pieces that blend seamlessly into the casserole.
Press broccoli lightly
After steaming, press the broccoli florets gently between paper towels or a clean kitchen towel to remove excess moisture. This prevents the casserole from becoming watery during baking.
Under-season slightly
Season the sauce lightly before adding the chicken and broccoli. The cheese and Parmesan add saltiness, so a cautious hand prevents an overly salty final dish.
Smart Swaps & Variations
Buffalo Style
Swap the cheddar for pepper Jack cheese and stir in 1/4 cup buffalo sauce and 1 tbsp ranch seasoning into the creamy base for a spicy kick.
Cauliflower Crunch
Replace half the broccoli with 2 cups of steamed and chopped cauliflower florets for extra crunch and a lower carb count.
Bacon Lover's
Cook 6 slices of bacon until crispy, crumble, and fold into the casserole before baking. Top with extra bacon bits and cheddar for a smoky finish.
Dairy-Free
Use dairy-free cream cheese, vegan cheddar, and coconut yogurt in place of sour cream. Add 1 tsp apple cider vinegar to maintain tang.
What to Serve With This
- A simple green salad with a lemon vinaigrette to cut through the richness.
- Garlic butter roasted asparagus for a fresh, elegant pairing.
- A glass of dry white wine like Sauvignon Blanc to complement the creamy, cheesy flavors.
- Warm low-carb garlic bread made with almond flour and mozzarella.
Storage & Reheating
Storage
Store leftovers in an airtight container in the refrigerator for up to 4 days. The casserole thickens as it cools, so it reheats beautifully.
Reheating
Reheat covered in the oven at 350°F for 15-20 minutes until warmed through. Avoid microwaving to prevent the top from becoming rubbery or the edges drying out.
Expert Chef Tips
- For extra flavor, deglaze the chicken pan with 2 tbsp chicken broth and reduce before adding to the sauce. This captures all the fond and adds depth.
- Let the casserole rest for 5 minutes after baking. This allows the sauce to set slightly, making it easier to serve neatly without falling apart.
- Use a mix of sharp cheddar and smoked gouda for a layered flavor profile-sharp for bite, smoked for warmth-without overpowering the dish.
Equipment You’ll Need
- 9x13-inch baking dish (glass or ceramic preferred for even heating)
- Large mixing bowl for combining sauce ingredients
- Steamer basket or microwave-safe bowl with lid for broccoli
- Box grater for Parmesan cheese (optional)
Nutritional Benefits
- Approximately 500 calories per serving with a balanced macro profile: 30g protein, 35g fat (mostly healthy fats), and only 6g net carbs.
- High in protein from chicken and calcium from multiple cheese sources, supporting muscle maintenance and bone health.
- Contains live cultures from sour cream and cream cheese, contributing to gut health when consumed as part of a varied diet.
- Low-glycemic impact due to minimal added sugars and high fiber from broccoli, making it suitable for blood sugar management.
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Frequently Asked Questions
Can I use fresh broccoli instead of frozen?
Absolutely. Blanch fresh broccoli florets in boiling water for 2 minutes, then shock in ice water to stop cooking. This mimics the texture of steamed frozen broccoli while keeping it vibrant.
What's the best way to shred chicken evenly?
Chill cooked chicken for 10-15 minutes before shredding to firm it up. Use two forks or a hand mixer on low speed with a paddle attachment for uniform shreds that blend well into the sauce.
Can I make this ahead and bake later?
Yes. Assemble the casserole up to 24 hours ahead and refrigerate, covered tightly. When ready to bake, let it sit at room temperature for 20 minutes first, then bake as directed-add 5-10 minutes if cold.
Is this recipe keto-friendly?
Yes. With no added sugars and minimal carbs from broccoli (about 4g net carbs per cup), this dish fits well into a keto meal plan. Double-check all ingredients, including cheese, for hidden fillers.
Can I substitute Greek yogurt for sour cream?
Yes, but use full-fat Greek yogurt and thin it with a splash of milk to match the consistency of sour cream. Avoid non-fat yogurt-it can curdle and create a grainy texture.
Why does my casserole look watery after baking?
Over-steaming the broccoli or not pressing out excess moisture are common culprits. Also, ensure the chicken is fully cooked and drained before mixing to minimize liquid.
What's a good low-carb thickener if the sauce is too thin?
Mix 1 tsp xanthan gum with 1 tbsp cold water and stir into the sauce until thickened. Alternatively, add 2 tbsp grated Parmesan and bake uncovered for an extra 5 minutes to help reduce moisture.
Can I use rotisserie chicken?
Yes! Use 3 cups of shredded rotisserie chicken and skip the salt in the sauce, as the chicken is often seasoned. Warm the chicken slightly before mixing to avoid cooling the casserole mixture.
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