Cheesy Keto Chicken Broccoli Casserole: Low Carb Dinner

The smoke detector went off again last Tuesday. Not because anything was burning, mind you. Just the usual kitchen chaos. Sometimes the broiler just… does its own thing.

My husband, bless his heart, ran in with a dish towel, swatting at the ceiling like it was a particularly stubborn fly. All while I was wrestling a pan out of the oven. A pan full of what was supposed to be a perfectly golden, bubbly keto dinner casserole low carb. It was still good, mind you. Just a little… rustic. If you are looking for other weeknight winners, you might also enjoy these satisfying mediterranean salad recipes as a fresh side.

It’s always something in my kitchen. A splash of sauce on the ceiling, a mysteriously missing spoon, the occasional smoke alarm serenade. It’s real cooking, I tell myself. Not like those glossy magazine kitchens where everything is pristine. Mine is lived-in. Loved-in. Stained with good food and good times. And maybe a few minor disasters. Even if you love classic versions of this dish, like the one found in this popular chicken broccoli casserole, this version will become a weeknight savior.

Why You’ll Love This Keto Chicken Casserole

Let’s be honest, sometimes you just need something easy. Something that hits the spot without making you feel like you’ve eaten a brick. This keto dinner casserole low carb is exactly that. It’s simple, doesn’t ask too much of you, and it’s actually satisfying.

It’s got that creamy, cheesy thing going on. You know the one. The kind of comfort food that just warms you up from the inside out. Plus, it’s all in one pan, which is a huge win for cleanup duty. I hate washing dishes more than anything.

Ingredients for Your Low Carb Casserole

Keto Dinner Casserole Low Carb – Fats

2 tbsp butter, divided – Real butter. Don’t skimp here. It’s flavor. It’s what browns the broccoli and makes that garlic sing. I usually use unsalted, just so I can control the salt later.

Keto Dinner Casserole Low Carb – Vegetables

16 ounces broccoli, coarsely chopped – Fresh is always best. Don’t use frozen if you can help it; it just gets too watery. You want some bite to it, not mush. I chop mine into bite-sized florets, not too small, not too big.

4 cloves garlic, minced – Garlic makes everything better. And I mean everything. Don’t use the pre-minced stuff in a jar. It just doesn’t taste the same. Freshly minced garlic has that pungent, sweet aroma when it hits the hot pan.

Keto Dinner Casserole Low Carb – Dairy & Cheese

3/4 cup heavy whipping cream – This is where the richness comes from. Don’t try to swap it for milk or half-and-half. It won’t be the same. The cream is what gives that sauce body and keeps it keto-friendly.

1 1/3 cups shredded mozzarella, divided – Mozzarella is great for melting. It gets all gooey and bubbly. I like to shred my own from a block, it melts smoother and has more flavor than the pre-shredded stuff.

1/3 cup grated Parmesan cheese – Adds a salty, nutty kick. Good quality Parmesan makes a difference. This isn’t the green can stuff. Get a wedge and grate it yourself.

How to Make Keto Chicken Broccoli Casserole

Set a 10-inch ovenproof skillet over medium heat and add 1 tablespoon of the butter. Once the butter is melted and sizzling, toss in your broccoli. Cook for about 4 minutes until bright green and slightly tender. Remove from the pan and set aside.

Melt the remaining butter, add minced garlic, and cook until fragrant. Pour in the heavy cream and simmer for 3 to 5 minutes until it thickens. Stir in the cheeses until smooth, season with salt and pepper, then fold in your chicken and broccoli. Top with the remaining mozzarella and broil for 2 to 5 minutes until golden and bubbling.

Tips for the Best Cheesy Casserole

Don’t rush the sauce. Letting that cream simmer and thicken properly is what gives this dish its luxurious texture. Also, always taste your sauce before adding more salt, as the Parmesan is already quite savory. If you have leftovers, feel free to serve them alongside a decadent chocolate treat for a complete dining experience. Be sure to stay by the oven while broiling to prevent that beautiful crust from burning.

Variations and Substitutions

You can easily customize this. Try adding fresh spinach or swapping chicken for Italian sausage. For those interested in the science of fats in cooking, you can read more about choosing healthy spreads to understand why real butter works so well here. Cauliflower is also a fantastic low-carb vegetable substitute if you want to switch things up.

Keto Chicken Broccoli Casserole

This cheesy chicken broccoli casserole is a stunningly easy and delicious keto dinner recipe. It comes together in 25 minutes and has less than 5g net carbs per serving.

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Prep Time 5 minutes mins

Cook Time 20 minutes mins

Total Time 25 minutes mins

Servings: 4 servings

Ingredients Method

Ingredients

  

• 2 tbsp butter divided
• 16 ounces broccoli coarsely chopped
• 4 cloves garlic minced
• 3/4 cup heavy whipping cream
• 1 1/3 cups shredded mozzarella divided
• 1/3 cup grated parmesan cheese
• Salt and pepper to taste
• 1 1/2 lb cooked, chopped chicken about 4 cups

Method

 

1. Set a 10-inch ovenproof skillet over medium heat and add 1 tablespoon of the butter. Once melted, add the broccoli and sauté until bright green and just tender, about 4 minutes. Remove the broccoli to a bowl.
2. Melt the remaining butter in the pan and add the garlic, cooking until fragrant, about 1 minute. Add the cream and bring to a simmer, then cook until reduced and thickened, 3 to 5 minutes.
3. Stir in 1/3 cup of the mozzarella and all of the Parmesan until melted. Season with salt and pepper to taste.
4. Stir in the broccoli and the chicken and top with the remaining 1 cup of mozzarella cheese.
5. Preheat the broiler. Set the pan about 6 inches from the heat and broil until the cheese is beginning to brown, 2 to 5 minutes.