Keto Chicken And Broccoli Casserole – Creamy, Comforting, And Low-Carb
This keto chicken and broccoli casserole hits that cozy, home-cooked spot without loading you up on carbs. It’s creamy, cheesy, and satisfying—everything you want in a weeknight dinner. The best part?
It uses simple ingredients and comes together without fuss. You can prep it ahead, bake when you’re ready, and enjoy leftovers for days. If you’re craving comfort food that still fits your goals, this one delivers.
Ingredients
Method
- Preheat and prep: Heat your oven to 375°F (190°C). Grease a 9x13-inch baking dish with cooking spray or butter.
- Par-cook the broccoli: Steam or microwave broccoli until just tender-crisp, about 3–4 minutes. Drain well and pat dry. You don’t want excess water in the casserole.
- Make the sauce base: In a large skillet over medium heat, melt the butter. Add garlic and cook 30 seconds until fragrant.
- Add cream and cream cheese: Pour in heavy cream and add cream cheese. Whisk until smooth and slightly thickened, 3–5 minutes.
- Season it: Stir in Dijon, onion powder, paprika, salt, pepper, and red pepper flakes if using. Taste and adjust seasoning.
- Add the cheese: Off the heat, stir in 1 cup shredded cheddar and the mozzarella until melted and silky.
- Combine: In a big bowl, mix chicken and broccoli. Pour the cheese sauce over and fold gently to coat everything evenly.
- Assemble: Transfer the mixture to the prepared baking dish. Top with the remaining 1/2 cup cheddar.
- Bake: Bake uncovered for 18–22 minutes, until bubbly around the edges and the top is golden in spots.
- Rest and garnish: Let it sit 5–10 minutes so it sets slightly. Sprinkle with parsley or chives and serve hot.
Why This Recipe Works
- Simple, pantry-friendly ingredients: Nothing fancy or hard to find.
Just chicken, broccoli, cheese, cream, and a few seasonings.
- Balanced texture: Tender broccoli, juicy chicken, and a rich, bubbly cheese sauce make every bite satisfying.
- Low-carb by design: No flour or breadcrumbs. The sauce thickens with cream cheese and shredded cheese instead.
- Great for meal prep: Bakes well, reheats well, and freezes like a champ. Ideal for busy weeks.
- Customizable: Swap cheeses, add bacon, or bump up the spice without breaking the keto profile.
What You’ll Need
- 3 cups cooked chicken, shredded or diced (rotisserie or leftover works well)
- 4 cups broccoli florets (fresh or frozen, bite-size)
- 1 cup heavy cream
- 4 oz cream cheese, softened
- 1 1/2 cups shredded cheddar cheese, divided
- 1/2 cup shredded mozzarella (for extra melt, optional)
- 2 tbsp unsalted butter
- 2 cloves garlic, minced
- 1 tsp Dijon mustard (optional but recommended)
- 1/2 tsp onion powder
- 1/2 tsp smoked paprika (or regular paprika)
- Salt and black pepper, to taste
- Pinch of red pepper flakes (optional)
- 1–2 tbsp chopped fresh parsley or chives (for garnish)
- Cooking spray or a little butter for greasing the dish
Instructions
- Preheat and prep: Heat your oven to 375°F (190°C).
Grease a 9×13-inch baking dish with cooking spray or butter.
- Par-cook the broccoli: Steam or microwave broccoli until just tender-crisp, about 3–4 minutes. Drain well and pat dry. You don’t want excess water in the casserole.
- Make the sauce base: In a large skillet over medium heat, melt the butter.
Add garlic and cook 30 seconds until fragrant.
- Add cream and cream cheese: Pour in heavy cream and add cream cheese. Whisk until smooth and slightly thickened, 3–5 minutes.
- Season it: Stir in Dijon, onion powder, paprika, salt, pepper, and red pepper flakes if using. Taste and adjust seasoning.
- Add the cheese: Off the heat, stir in 1 cup shredded cheddar and the mozzarella until melted and silky.
- Combine: In a big bowl, mix chicken and broccoli.
Pour the cheese sauce over and fold gently to coat everything evenly.
- Assemble: Transfer the mixture to the prepared baking dish. Top with the remaining 1/2 cup cheddar.
- Bake: Bake uncovered for 18–22 minutes, until bubbly around the edges and the top is golden in spots.
- Rest and garnish: Let it sit 5–10 minutes so it sets slightly. Sprinkle with parsley or chives and serve hot.
Storage Instructions
- Refrigerator: Store in an airtight container for up to 4 days.
Reheat covered in the oven at 325°F or in the microwave in short bursts.
- Freezer: Freeze tightly wrapped portions for up to 3 months. Thaw overnight in the fridge before reheating.
- Meal prep tip: Assemble unbaked, cover well, and refrigerate up to 24 hours. Add 5–10 extra minutes to the bake time if cold.
Why This is Good for You
- Low in carbs, high in protein: Chicken provides steady, satisfying protein without spiking carbs.
- Healthy fats for satiety: Cream, cheese, and butter help keep you full and can support a ketogenic way of eating.
- Veggie power: Broccoli adds fiber, vitamin C, vitamin K, and antioxidants that support overall health.
- No refined starches: The sauce gets its body from cream cheese and shredded cheese, not flour or cornstarch.
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What Not to Do
- Don’t skip drying the broccoli: Excess water makes the sauce thin and the casserole watery.
- Don’t overcook the chicken: Start with cooked chicken that’s still moist.
Dry chicken won’t improve in the oven.
- Don’t boil the cream sauce hard: Gentle heat keeps it smooth. High heat can cause it to split.
- Don’t overload with salty add-ins: Bacon, extra cheese, or bouillon can push salt levels too high. Season thoughtfully.
- Don’t cover while baking: You’ll lose that golden, bubbly top and trap steam.
Variations You Can Try
- Buffalo version: Stir 2–3 tbsp buffalo sauce into the cheese sauce and top with blue cheese crumbles.
- Bacon ranch: Add 1–2 tsp ranch seasoning and 4 slices crispy chopped bacon.
- Jalapeño popper: Fold in sliced jalapeños and use a blend of cheddar and pepper jack.
- Mushroom and spinach: Sauté mushrooms in butter, add a handful of spinach, and mix in for extra veg.
- Herb-forward: Add fresh thyme or rosemary to the sauce for a cozy, aromatic twist.
- Dairy-light tweak: Use less cheddar and swap part of the cream with unsweetened almond milk plus an extra ounce of cream cheese for body.
FAQ
Can I use raw chicken instead of cooked?
Yes, but cook it first.
Pan-sear bite-size pieces with salt and pepper until just cooked through, then proceed. Using pre-cooked chicken saves time and ensures tenderness.
Is frozen broccoli okay?
Absolutely. Thaw it, drain well, and pat dry.
If it’s very wet, microwave it briefly and squeeze out excess moisture with paper towels.
How can I make it spicier?
Add red pepper flakes, a dash of hot sauce, or swap in pepper jack. A little cayenne in the sauce also does the trick.
What cheese works best?
Sharp cheddar for flavor and mozzarella for melt are a great combo. Gruyère, gouda, or Monterey Jack also work well.
Shred your own for the smoothest sauce.
How many carbs per serving?
Exact numbers vary by brands and portions, but expect roughly 5–7 net carbs per serving when made as written. If you track macros, plug your specific ingredients into a calculator.
Can I make it ahead?
Yes. Assemble up to a day in advance, cover, and refrigerate.
Bake straight from the fridge, adding a few extra minutes until hot and bubbly.
Why did my sauce separate?
It likely boiled too hard or had too much water from the broccoli. Keep heat moderate, whisk gently, and be sure the broccoli is dry before mixing.
What can I serve with it?
A simple green salad, roasted asparagus, or sautéed zucchini keeps it light and low-carb. It’s rich, so crisp, fresh sides pair nicely.
Can I make it in a skillet?
Yes, if your skillet is oven-safe and at least 10–12 inches.
Mix everything in the skillet, top with cheese, and bake as directed.
How do I keep the top extra golden?
Broil for 1–2 minutes at the end, watching closely. A light sprinkle of paprika or parmesan also boosts color.
In Conclusion
This keto chicken and broccoli casserole is the kind of reliable, crowd-pleasing dinner you’ll make on repeat. It’s simple, flexible, and full of creamy, cheesy comfort without the carbs.
Keep the broccoli dry, the heat gentle, and the seasoning balanced, and you’ll get perfect results every time. Serve it hot, stash the leftovers, and enjoy an easy win on busy nights.
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