Easy Low Carb Chicken Casserole – High-Protein, Gluten-Free Comfort Meal

This Easy Low Carb Chicken Casserole is creamy, cheesy, and packed with protein—without the heavy carbs. I’m Emma Lowcarver, founder of GlutenFreeGateway.com. In my 30s, I transformed my health by focusing on low-carb, gluten-free, and high-protein meals. This dish became one of my staples. It’s cozy like classic comfort food but made with smart ingredients like shredded chicken, broccoli, and a creamy cottage cheese–based sauce that’s completely gluten-free.

It’s the kind of meal that feels like a splurge but fuels your body with clean energy. Whether you’re feeding a hungry family or prepping meals for the week, this easy low carb chicken casserole delivers everything you love about baked comfort food—with zero compromise. The creamy texture and rich flavor come from protein-packed ingredients, not flour or processed cream sauces.

This recipe has earned its place alongside fan favorites like Cottage Cheese Spinach Crustless Quiche, Keto Magic Cookies, and Fathead Pizza Dough. Let’s break down why this is the perfect weeknight win.

Why I Love This Recipe

• No grains, no gluten, no guilt – 100% low-carb & gluten-free
• Protein-rich from shredded chicken, cottage cheese, and eggs
• Creamy and satisfying without cream of soup or flour
• One-dish dinner that feeds the whole family
• Make-ahead friendly – prep and bake later
• Freezes beautifully – great for batch cooking
• Hidden veggies make it even more nourishing
• Customizable with different protein, cheese, or low-carb veggies

This casserole is my go-to when I want something cozy like Zucchini Hamburger Casserole but with the classic flavors of baked chicken.

Key Ingredients

Cooked Chicken
Use shredded rotisserie chicken, grilled breast, or even leftover turkey. The neutral flavor soaks up the creamy, cheesy sauce and holds together well. About 2½ to 3 cups is perfect.

Cottage Cheese
Blended for creaminess, cottage cheese acts like a healthy sub for sour cream or heavy cream. It adds creaminess, protein, and a light tang without overpowering the flavor.

Shredded Cheese
A mix of cheddar and mozzarella melts beautifully into the sauce and adds flavor. Feel free to sub in Monterey Jack, gouda, or a dairy-free blend if needed.

Eggs
Help bind everything together so the casserole sets well while baking. It turns the creamy mixture into a sliceable, satisfying dish.

Steamed Broccoli
Adds fiber, color, and balance to the richness. Chop small for even baking. Swap with cauliflower, spinach, or mushrooms based on what you have.

Seasoning
Garlic powder, onion powder, salt, pepper, and dried thyme bring cozy depth to the dish. Add red pepper flakes for a subtle kick.

Optional Toppings
Chopped green onion, crushed pork rinds for crunch, or a little extra cheese on top for that golden brown finish.

Step-by-Step Instructions

1. Preheat and prep
Preheat oven to 375°F. Grease or line a 9×13 baking dish.

2. Steam broccoli
Lightly steam or microwave 2 cups chopped broccoli until tender-crisp. Drain and set aside.

3. Blend the sauce
In a blender, combine:

• 1 cup full-fat cottage cheese
• 3 eggs
• 1/2 tsp garlic powder
• 1/2 tsp onion powder
• Salt and pepper to taste

Blend until smooth and creamy.

4. Mix it all together
In a large mixing bowl, stir together:

• 3 cups shredded chicken
• Cooked broccoli
• 1 cup shredded cheddar
• 1 cup shredded mozzarella
• Blended sauce mixture

Mix until well combined.

5. Bake
Pour into prepared baking dish and spread evenly. Top with 1/2 cup additional cheese if desired. Bake for 30–35 minutes or until bubbly and golden brown.

6. Cool and serve
Let it rest for 5–10 minutes before serving. Slice and enjoy hot!

Pair it with Crispy Cottage Cheese Chips or Garlic Butter Zucchini Skewers for a full low-carb spread.

You Must Know

• Blending the cottage cheese makes a huge difference in texture—don’t skip this step
• Broccoli must be cooked before baking or it’ll release too much water
• Eggs help it set into a sliceable bake—don’t leave them out
• Don’t overbake, or it may dry out—golden edges mean it’s ready
• Let it cool before slicing to get clean, non-runny portions

This method is similar to our Cottage Cheese Zucchini Muffins, where blending protein-rich ingredients gives structure without flour.

Storage Tips

• Store leftovers in an airtight container in the fridge for up to 5 days
• Freeze slices individually for quick reheating
• Reheat in oven at 350°F for 10–12 minutes, or microwave gently
• Avoid overcooking on reheat to preserve texture

This casserole is a perfect make-ahead dish—just like our Pepperoni Pizza Casserole or Chicken Zucchini Bake.

Ingredient Substitutions

Chicken: Try ground turkey, shredded pork, or plant-based crumbles
Cottage Cheese: Sub with ricotta, Greek yogurt, or dairy-free alternatives
Broccoli: Use cauliflower rice, spinach, kale, or sautéed mushrooms
Cheese: Choose any melty cheese you like—just watch for added starches in pre-shredded blends
Eggs: Use flax eggs (1 tbsp flax + 2.5 tbsp water per egg) if needed, though texture will be softer
Seasonings: Add paprika, chili flakes, or ranch seasoning to mix it up

Serving Suggestions

• Serve with a side salad or roasted green beans
• Pair with Cottage Cheese Flatbread for scooping
• Add a dollop of sour cream or avocado mash on top
• Slice into squares for lunchbox-friendly meal prep
• Turn into breakfast with a fried egg on top

Cultural Context

This low-carb take on casserole pulls inspiration from classic American comfort dishes but replaces the carb-heavy pasta, rice, or cream-of-soups with real, whole food ingredients. It’s like a crustless chicken pot pie meets cheesy bake—adapted for modern, health-conscious cooking.

Pro Tips

• Blend sauce for smoothness
• Use a rotisserie chicken to save time
• Let sit 10 mins before slicing
• Grease the dish well or use parchment for easy serving
• Top with green onions or crushed pork rinds for crunch

FAQ

Is this casserole keto and gluten-free?
Yes! It’s naturally low in carbs, grain-free, and uses no flour or gluten-based thickeners.

Can I make this dairy-free?
Yes, with dairy-free cheese and yogurt alternatives, but texture will vary.

Can I prep it ahead of time?
Absolutely. Assemble, refrigerate overnight, then bake when ready.

How long does it last in the fridge?
Up to 5 days, or freeze for 2 months.

Conclusion

This Easy Low Carb Chicken Casserole gives you the comfort of a creamy, cheesy dinner—without the heaviness or crash. It’s high in protein, low in carbs, full of hidden veggies, and customizable for any diet. Whether you’re doing meal prep or feeding a hungry table, this casserole delivers warmth, flavor, and nourishment in every bite.

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