Name: Creamy Low Carb Chicken Casserole with Broccoli and Bacon
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Ingredients: 4 cups cooked chicken, shredded or diced (560g / 1.25 lbs); 350g (5 cups) broccoli florets; 8 slices cooked turkey bacon, chopped; 3 cloves garlic, minced; 120g (1/2 cup) shredded mozzarella; 120g (1/2 cup) shredded cheddar; 240ml (1 cup) ranch dressing; 120g (1/2 cup) shredded cheddar; 120g (1/2 cup) shredded mozzarella

Sunday afternoons in our house used to be chaotic until I started batch cooking. This low carb chicken casserole was born when I had half a rotisserie chicken, some broccoli that was about to turn, and a fridge full of random cheese. Jake tried it cold out of the container the next day and said it was better than most takeout lunches.

This low carb chicken casserole is loaded with tender shredded chicken, crisp broccoli, savory turkey bacon, and a creamy ranch-cheese sauce that bakes into golden, bubbly perfection. It takes 45 minutes, feeds the whole family, and has only 6g of net carbs per serving. It is comfort food that just happens to be keto-friendly.

Why You'll Love This Recipe

Only 6g Net Carbs Per Serving: This low carb chicken casserole is keto-friendly without tasting like a diet meal. Creamy, cheesy, and completely satisfying.
One Dish, Zero Fuss: Everything goes into a single 9x13-inch baking dish. Mix, layer, sprinkle cheese, and let the oven do the rest.
Meal Prep Champion: This casserole tastes even better the next day. Make it on Sunday and you have easy, filling lunches all week.
The Cheese Situation Is Incredible: Two full cups of melted cheddar and mozzarella create a bubbly golden crust and a gooey, stretchy interior.
Family-Approved, Picky Eater Tested: Lily eats the whole thing. Noah eats the cheese off the top. Jake asks for seconds. Nobody complains.

Ingredients You'll Need

This low carb chicken casserole uses simple, everyday ingredients you probably already have in your fridge. The magic is in how they all come together under a blanket of melted cheese.

4 cups cooked chicken, shredded or diced (560g / 1.25 lbs), rotisserie chicken is the easiest option. Shred it while still warm for the best texture.
350g (5 cups) broccoli florets, fresh broccoli gives the best texture. Steam just until bright green with a little bite left.
8 slices cooked turkey bacon, chopped, turkey bacon keeps this lighter while adding smoky, savory crunch.
3 cloves garlic, minced, fresh garlic adds a warm, savory base. About 1 tablespoon when minced.
120g (1/2 cup) shredded mozzarella (for base), melts beautifully for that stretchy, gooey texture throughout.
120g (1/2 cup) shredded cheddar (for base), adds sharp, tangy flavor that balances the creamy ranch.
240ml (1 cup) ranch dressing, the creamy base of the casserole. Full-fat ranch gives the richest result.
120g (1/2 cup) shredded cheddar (for topping), the golden, bubbly top layer with crispy cheese edges.
120g (1/2 cup) shredded mozzarella (for topping), gives that beautiful cheese pull when you scoop out a serving.

Shred your own cheese if you can. Pre-shredded cheese contains anti-caking agents that prevent smooth melting. Freshly shredded cheese melts into a silky, gooey layer. If you love cheesy low carb meals, my Low Carb Cheesy Garlic Chicken Wraps use the same cheddar-mozzarella combination in wrap form.

Use full-fat ranch dressing. The fat content creates the creamy coating that keeps everything moist. Light ranch will result in a drier casserole.

Turkey bacon keeps the carbs down. It adds smoky flavor and crunch. Bake at 200C (400F) for 10 minutes while you prep.

Note: Steam the broccoli just until bright green and slightly firm. If you steam it until fully soft, it will turn mushy in the oven. You want it to still have a little crunch when it goes into the baking dish because the 30 minutes in the oven finishes the job.

How to Make Low Carb Chicken Casserole

This low carb chicken casserole comes together in just a few simple steps. The hardest part is waiting for it to come out of the oven because your kitchen is going to smell incredible.

Step 1: Preheat and prep your ingredients.

Preheat your oven to 190C (375F) and lightly grease a 9×13-inch baking dish. Steam or blanch broccoli for 2 to 3 minutes until bright green and just barely tender. Drain well and set aside. Shred or dice your cooked chicken.

Lora’s Tip: If using frozen broccoli, thaw completely and squeeze out as much water as possible with a clean kitchen towel. Excess moisture is the enemy of a creamy casserole.

Step 2: Mix the casserole base.

In a large bowl, combine chicken, broccoli, turkey bacon, garlic, 120g (1/2 cup) mozzarella, 120g (1/2 cup) cheddar, and 240ml (1 cup) ranch dressing. Toss gently until every piece is evenly coated in the creamy ranch mixture.

Step 3: Layer in the baking dish.

Spoon the mixture into your prepared baking dish and spread into an even layer. Press down gently with the back of a spoon. For extra cheesiness, sprinkle a thin layer of cheddar directly onto the mixture before adding the topping.

Step 4: Add the cheesy topping.

Sprinkle the remaining 120g (1/2 cup) cheddar and 120g (1/2 cup) mozzarella evenly over the top. Make sure cheese reaches the edges for those crispy golden corners. If you enjoy cheesy chicken dinners, my Cheesy Cajun Chicken Pasta delivers the same bubbly cheese satisfaction.

Step 5: Bake until golden and bubbly.

Bake for 25 to 30 minutes at 190C (375F) until the cheese is fully melted, bubbly, and turning golden brown. The edges should be sizzling and the filling hot all the way through.

Lora’s Tip: If the cheese is not golden enough after 30 minutes, switch to the broiler on high for 1 to 2 minutes. Watch it closely because it goes from golden to burnt in seconds.

Step 6: Rest, then serve.

Let the casserole rest for 5 to 10 minutes before scooping. The cheese thickens slightly and the filling sets, so scoops hold together instead of turning soupy. Garnish with fresh parsley or extra turkey bacon crumbles.

Lora’s Tip: For meal prep, let cool completely before portioning. Keeps in the fridge for up to 4 days and reheats perfectly in the microwave for 2 to 3 minutes.

Lora's Kitchen Tips

Use rotisserie chicken to save time. Shred it while still warm and the whole recipe comes together in under 15 minutes of active prep.
Drain your broccoli thoroughly. Wet broccoli is the number one reason casseroles turn watery. Spread florets on a clean towel and pat dry.
Shred cheese fresh from the block. Pre-shredded cheese contains anti-caking starch that prevents smooth melting. Freshly shredded melts into gooey golden perfection.
Add a hidden cheese layer in the middle. Sprinkle cheddar directly onto the filling before adding the topping. It creates a surprise cheesy center.
Let the casserole rest before cutting. Five to ten minutes is all you need. The cheese sets slightly and scoops hold together perfectly.

Variations and Substitutions

This low carb chicken casserole is delicious as written, but here are some ways to customize it.

The Buffalo Version: Replace the ranch dressing with a 50/50 mix of ranch and buffalo hot sauce. The heat and tang take this casserole to a completely different level.

The Cauliflower Swap: Not a broccoli fan? Use cauliflower florets instead. They have a milder flavor and melt into the cheesy base even more.

The Jalapeño Popper Version: Add 2 to 3 diced jalapeños and 115g (4 oz) of cream cheese to the base. Spicy, creamy, and incredible.

The Spinach and Artichoke Twist: Swap broccoli for chopped frozen spinach (thawed and squeezed dry) and a can of artichoke hearts. It tastes like spinach-artichoke dip in casserole form.

The Kid-Friendly Version: Skip the garlic and turkey bacon. Use only mozzarella for a milder flavor. Lily approved this version before she came around to the full recipe.

What to Serve with Low Carb Chicken Casserole

This low carb chicken casserole is hearty enough to stand on its own, but a simple side rounds out the meal nicely.

A crisp green salad with olive oil and lemon juice is the perfect contrast. Roasted green beans or steamed asparagus with a squeeze of lemon add color and freshness. Cauliflower mash is a fantastic low carb alternative to mashed potatoes.

For another easy chicken dinner with a similar low carb profile, my Garlic Butter Chicken and Green Beans is a one-pan meal that pairs beautifully on the same weekly rotation.

Storage, Freezing, and Reheating

Storage: Store in an airtight container in the refrigerator for up to 4 days. The flavors develop overnight, so leftovers taste even better.
Freezing the casserole: Let cool completely. Wrap tightly in plastic wrap then foil. Freeze for up to 3 months. Thaw overnight before reheating.
Freezing individual portions: Scoop into individual containers for grab-and-go meal prep. These defrost faster than a full pan.
Reheating for best results: Reheat in the oven at 175C (350F) for 10-15 min until hot and bubbly. Microwave works for individual portions: 2-3 minutes, covered.
Make-ahead tip: Assemble up to 24 hours in advance. Cover and refrigerate. Let sit at room temp 15-20 minutes before baking. Add 5 extra minutes to bake time.

Frequently Asked Questions

Here are the questions I get asked most about this low carb chicken casserole:

How many net carbs are in this casserole?

Each serving has approximately 6 grams of net carbs. This varies slightly depending on brands of ranch dressing and cheese. For lowest carbs, use full-fat ranch with no added sugars and shred your own cheese.

Can I use regular bacon instead of turkey bacon?

Yes. Regular bacon adds a richer, smokier flavor. Cook until crispy, chop into small pieces, and use the same amount. Calories increase slightly but carbs stay about the same.

What can I use instead of broccoli?

Cauliflower florets are the most popular swap. Green beans add a nice crunch. Roasted zucchini or frozen spinach (thawed and squeezed dry) also work well. Any low carb vegetable that holds up to baking is a good choice.

Can I make this without ranch dressing?

Substitute 180ml (3/4 cup) sour cream and 60ml (1/4 cup) mayonnaise, seasoned with garlic powder, onion powder, dried dill, and dried parsley. Full-fat cream cheese thinned with heavy cream also works.

Is this casserole good for meal prep?

This is one of the best meal prep recipes I make. It keeps for up to 4 days, reheats perfectly, and the flavors get better overnight. I make a full pan on Sunday and portion it out for the week.

This low carb chicken casserole is the meal that fixed our weeknight chaos. Cheesy, creamy, loaded with chicken and broccoli, and only 6g of net carbs per serving. It takes 45 minutes, makes enough for the whole family plus leftovers, and it reheats like a dream. Make it once and it will earn a permanent spot in your rotation.

With love and extra melted cheese,
Lora x