When the week gets busy and the last thing you want is a complicated dinner, this keto chicken and broccoli cheesy casserole feels like a warm hug on a plate. It’s one of those dishes that somehow delivers comfort food vibes without the carb overload, making it a reliable go-to when you want something filling and satisfying but also a bit lighter.

I remember the first time I made it: the kitchen filled with the smell of garlic and melting cheese while the broccoli steamed just enough to still have a little snap. I wasn’t paying full attention—actually, I might’ve gotten distracted by a text or two—so I wasn’t exactly sure when to pull it out of the oven. But that golden top bubbling away was a clear sign it was time. I served it up a little rushed, but even with that, every bite was creamy, cheesy, and just right. Honestly, it’s the kind of meal where you don’t really need to fuss over the details, and that’s what makes it so good.

Why You’ll Love It:

Combines tender chicken and fresh broccoli in a creamy, cheesy sauce that’s both comforting and low-carb.
It’s simple — and that’s kind of the point. No need to stress over complicated steps or fancy ingredients.
Ready in less than an hour, which is a win for busy weeknights or those days when you just want dinner done.
Offers a nice balance between indulgence and health-conscious eating, perfect for keto or anyone wanting a satisfying meal.

Even if you’re not strictly keto, this casserole fits in well with many eating plans, and it doesn’t feel like you’re missing out on flavor or richness. The cheese sauce is rich without being overwhelming, and the broccoli adds a fresh texture that stops it from feeling heavy.

Keto Chicken and Broccoli Cheesy Casserole

Print Recipe

A creamy, cheesy, and low-carb casserole featuring tender chicken, fresh broccoli, and a rich cheese sauce, perfect for a keto-friendly dinner.

Prep Time: 15 minutes
Cook Time: 30 minutes
Total Time: 45 minutes
Yield: 6

Ingredients

Scale

3 cups cooked chicken breast, shredded
4 cups fresh broccoli 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 onion powder
1 tablespoon olive oil

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Instructions

Preheat the oven to 375°F (190°C).
Bring a large pot of water to a boil. Add the broccoli florets and cook for 2 minutes until tender-crisp. Drain and immediately rinse under cold water to stop cooking. Set aside.
In a medium skillet, heat olive oil over medium heat. Add 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 is fully melted 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 onion powder until well combined.
In a large mixing bowl, combine the shredded cooked chicken, blanched broccoli, and cheese sauce. Mix well to evenly coat all ingredients.
Transfer the mixture into a greased 9×13-inch baking dish and spread evenly.
Bake in the preheated oven for 20-25 minutes until the casserole is bubbly and the top is golden brown.
Remove from oven and let it rest for 5 minutes before serving.

Kitchen Notes: You don’t need anything fancy here—just a sturdy baking dish and a skillet to bring the sauce together. I usually serve it alongside a simple green salad or some roasted veggies for extra color and crunch. If you want to mix things up, swapping mozzarella for pepper jack adds a little kick, or you could try swapping chicken for cooked turkey if you have leftovers. Sometimes I toss in a pinch of red pepper flakes to wake up the flavors, but I haven’t tested that with everyone in the family yet.

FAQ:

Can I make this ahead of time? Yes, it actually reheats well, so prepping it a day early works great if you want to save time on the day of.

Is it freezer-friendly? Definitely. Just freeze in a suitable container and thaw overnight before reheating.

What if I don’t have fresh broccoli? Frozen works fine too—just thaw and drain any excess water before mixing it in.

Give this keto chicken and broccoli cheesy casserole a try next time you want something cozy, cheesy, and fuss-free. You might find yourself reaching for it more often than you expect.