Low carb chicken casserole is one of those dinners that delivers big on flavor without the carb overload. This creamy, cheesy bake is loaded with tender chicken, broccoli, crispy turkey bacon, and ranch dressing, then finished with a bubbly melted cheese topping. It is keto-friendly, family-approved, and genuinely simple to make.
After a long day, the last thing I want is a complicated dinner. I started making this low carb chicken casserole on busy weeknights when I needed something satisfying that would come together fast and keep the whole family happy. It has since become one of the most-requested meals at my table, and I think once you try it, you will understand why.
The combination of ranch dressing and two melted cheeses creates a sauce that is rich without being heavy. The broccoli holds up beautifully in the oven, and the turkey bacon adds a smoky, savory crunch throughout every bite.
Table of Contents
Ingredients for Low Carb Chicken Casserole
Getting the right ingredients makes all the difference here. I always reach for rotisserie chicken when I make this casserole because it cuts prep time significantly and the flavor is already built in. Here is everything you will need:
Casserole Base:
- 5 cups broccoli florets (fresh preferred; if using frozen, steam and drain thoroughly)
- 4 cups cooked chicken, shredded or diced (I recommend rotisserie chicken for best flavor and convenience)
- 8 slices cooked turkey bacon, chopped into half-inch pieces
- 3 cloves garlic, minced
- 1/2 cup shredded mozzarella (freshly shredded melts much smoother than pre-shredded)
- 1/2 cup shredded cheddar (my preference is sharp cheddar for a bolder flavor)
- 1 cup ranch dressing (Hidden Valley Original works great; in my experience, slightly warming it before mixing helps it coat everything evenly)
Cheesy Topping:
- 1/2 cup shredded cheddar
- 1/2 cup shredded mozzarella
If you enjoy casserole-style chicken dinners, you might also love this Chicken Parmesan Casserole for another easy weeknight option.
Step-by-Step Instructions
In my experience, the key to a great low carb chicken casserole is making sure the broccoli is well-drained before it goes into the baking dish. Any extra moisture will make the casserole watery, so take that extra minute to drain it well.
Step 1: Preheat your oven to 375 degrees F. Lightly grease a 9×13-inch baking dish and set it aside.
Step 2: Steam or blanch the broccoli florets until just tender and still bright green, about 3 to 4 minutes. Drain thoroughly and pat dry if needed. Do not overcook at this stage since the broccoli will continue cooking in the oven.
Step 3: In a large mixing bowl, combine the shredded chicken, broccoli, chopped turkey bacon, minced garlic, 1/2 cup mozzarella, 1/2 cup cheddar, and ranch dressing. Toss gently until everything is evenly coated. Pro tip: slightly warm the ranch dressing before adding it so it coats the ingredients more smoothly.
Step 4: Spread the mixture evenly into the prepared baking dish, pressing it into a flat, even layer.
Step 5: Sprinkle the remaining 1/2 cup cheddar and 1/2 cup mozzarella over the top in an even layer. For an extra cheesy result, add a thin layer of cheddar under the topping mixture before spreading.
Step 6: Bake uncovered for 25 to 30 minutes, until the casserole is hot and bubbling throughout and the cheese on top is golden at the edges.
Step 7: Remove from the oven and let it rest for 5 to 10 minutes before serving. This resting time helps the casserole firm up so it scoops cleanly.
What to Serve with Low Carb Chicken Casserole
This casserole is rich and satisfying on its own, but pairing it with the right sides creates a well-rounded, complete meal. Here are some of the best sides that complement its creamy, cheesy flavors:
Simple Green Salad: A crisp salad with olive oil and fresh lemon juice cuts through the richness of the casserole and adds a bright, refreshing contrast to the plate. This Healthy Avocado Chicken Salad also works beautifully as a lighter starter.
Roasted Green Beans or Steamed Asparagus: Both are naturally low in carbs and add a clean, earthy flavor alongside the creamy casserole. The slight char on roasted green beans pairs especially well with the smoky turkey bacon.
Cauliflower Mash: This is one of my favorite low-carb swaps for mashed potatoes. It is creamy, filling, and soaks up any extra cheesy sauce from the casserole perfectly.
Sauteed Mushrooms: Earthy, buttery mushrooms complement the savory ranch and cheese flavors without adding carbs. They bring a satisfying texture and depth to the overall meal.
Sweet and Spicy Turkey Broccoli Bowls: If you want to keep the broccoli theme going with a different flavor profile, these Sweet and Spicy Ground Turkey Broccoli Bowls make a great lighter side or next-day lunch alongside leftovers.
Low-Carb Almond Flour Dinner Rolls: These are perfect for scooping up every last bit of cheesy filling. They keep the meal keto-friendly while adding a satisfying bread element.
You might also enjoy pairing this casserole night with another low-carb favorite like these Low Carb Greek Chicken Bowls for your weekly meal prep rotation.
Storage and Serving Tips
This low carb chicken casserole stores really well, making it a great option for meal prep. Keep leftovers in an airtight container in the refrigerator for up to 4 days. To freeze, let the casserole cool completely, then wrap it tightly in plastic wrap followed by aluminum foil. It will keep in the freezer for up to 3 months. Thaw overnight in the fridge before reheating.
To reheat, warm individual portions in the microwave for 1 to 2 minutes, or place the whole dish in a 350 degree F oven until hot and bubbly throughout, about 15 to 20 minutes. I recommend covering it with foil while reheating in the oven to prevent the cheese from over-browning.
Pro tip: you can assemble this casserole up to 24 hours in advance. Just cover it tightly and refrigerate. When you are ready to bake, let it sit at room temperature for about 20 minutes first so it bakes evenly from edge to center.
Conclusion
This low carb chicken casserole is the kind of dinner that makes weeknights so much easier. It comes together with simple ingredients, bakes in under 30 minutes, and delivers the kind of cheesy, comforting flavor that everyone at the table will ask for again. Give it a try this week and see how quickly it becomes a regular in your dinner rotation. If you love easy casserole recipes like this one, be sure to check out this High Protein Ground Turkey Casserole for another hearty, low-fuss weeknight option.
Creamy Low Carb Chicken Casserole with Broccoli and Bacon
Ingredients
Equipment
Method
- Preheat oven to 375 degrees F. Lightly grease a 9×13-inch baking dish and set aside.
- Steam or blanch broccoli florets for 3 to 4 minutes until just tender and still bright green. Drain very thoroughly and pat dry if needed.
- In a large bowl, combine shredded chicken, broccoli, chopped turkey bacon, minced garlic, 1/2 cup mozzarella, 1/2 cup cheddar, and ranch dressing. Toss gently until evenly coated.
- Spread the mixture evenly into the prepared baking dish, pressing into a flat, even layer.
- Sprinkle the remaining 1/2 cup cheddar and 1/2 cup mozzarella evenly over the top.
- Bake uncovered for 25 to 30 minutes until hot, bubbling throughout, and the cheese is golden at the edges.
- Remove from the oven and let rest for 5 to 10 minutes before serving to allow the casserole to firm up for clean scooping.
