When the week sneaks up on you and all you want is something warm and satisfying, this low carb chicken broccoli cauliflower casserole steps in like an old friend. It’s not just the creamy cheese sauce or the tender chicken that gets me—there’s something about how the roasted edges give way to the tender florets nestled inside, all bubbling and golden from the oven.

One evening, I remember juggling dinner and emails, nearly burning the sauce because I was distracted by a sudden text. Still, the smell pulled me back to the kitchen. I scooped the first bite onto my plate, and even with a slightly rushed prep, it tasted like I’d taken my time. The blend of smoky paprika with garlic and cheeses gave that perfect balance of comfort and freshness. The green onions sprinkled on top added a snap of color and flavor, making it feel like a little victory on a hectic day.

Why You’ll Love It:

It’s a low carb dish that doesn’t skimp on creamy, cheesy indulgence.
The combination of broccoli and cauliflower offers satisfying texture without being heavy.
Easy to prepare, but the flavors feel layered and rich — though it does need a bit of hands-on time, so it’s not a grab-and-go meal.
Great for leftovers, which I usually end up loving even more the next day.

If you’re worried about the cheese sauce coming out too thick or thin, don’t stress—you can tweak the cream levels as you go. It’s forgiving, and honestly, that’s part of the charm.

Low Carb Chicken Broccoli Cauliflower Casserole

Print Recipe

A delicious and healthy low carb casserole featuring tender chicken, fresh broccoli, and cauliflower baked in a creamy cheese sauce. Perfect for a comforting dinner that fits your low carb lifestyle.

Prep Time: 15 minutes
Cook Time: 35 minutes
Total Time: 50 minutes
Yield: 6 1x

Ingredients

Scale

3 cups cooked chicken breast, shredded
2 cups fresh broccoli florets
2 cups fresh cauliflower florets
1 cup shredded sharp cheddar cheese
1 cup shredded mozzarella cheese
1/2 cup grated Parmesan cheese
1 cup heavy cream
4 ounces cream cheese, softened
2 cloves garlic, minced
1/2 teaspoon salt
1/4 teaspoon black pepper
1/2 teaspoon smoked paprika
2 tablespoons olive oil
1/4 cup chopped green onions

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Instructions

Preheat the oven to 375°F (190°C).
Bring a large pot of salted water to a boil. Add the broccoli and cauliflower florets and blanch for 3 minutes until slightly tender. Drain and set aside.
In a large skillet, heat the olive oil over medium heat. Add the minced garlic and sauté for 1 minute until fragrant.
Add the softened cream cheese and heavy cream to the skillet. Stir continuously until the cream cheese melts and the mixture is smooth.
Remove the skillet from heat and stir in the shredded cheddar cheese, mozzarella cheese, grated Parmesan cheese, salt, black pepper, and smoked paprika. Mix until well combined.
In a large mixing bowl, combine the shredded cooked chicken, blanched broccoli, and cauliflower.
Pour the cheese sauce over the chicken and vegetables and gently fold to coat everything evenly.
Transfer the mixture to a greased 9×13 inch casserole dish and spread it out evenly.
Bake in the preheated oven for 25 minutes until the casserole is bubbly and the top is golden brown.
Remove from oven and sprinkle chopped green onions over the top before serving.

Kitchen Notes: You don’t need fancy equipment here; a good skillet and a casserole dish do the job just fine. I like to serve this with a simple side salad or even some garlic bread if carbs aren’t a worry for you that day. Sometimes, I swap out the chicken for turkey or add a pinch more smoked paprika when I want a smokier punch, but I haven’t tested all these tweaks extensively—so feel free to experiment a bit. A dash of red pepper flakes can also spice it up if you’re feeling adventurous.

FAQ:

Can I make this ahead of time? Yes, you can assemble it and refrigerate for a few hours before baking, which makes dinner prep easier on busy days.

Is it freezer-friendly? Absolutely. Just thaw overnight in the fridge before reheating.

Can I use frozen vegetables? You can, but the texture might be a bit softer. Blanching fresh veggies keeps them crisp-tender.

Feeling ready for a cozy night in? Save this recipe, print it out, and give it a try—you might find your new favorite weeknight casserole.