Keto Chicken Casserole Recipe

Let’s talk about comfort food for a minute. The kind that makes you feel all warm and cozy from the inside out.

That’s this keto chicken casserole, right here. It’s not just a dish, it’s a whole mood – a bubbling, cheesy, incredibly satisfying hug on a plate.

Now, I know what you might be thinking. Casseroles can be heavy, loaded with carbs, and leave you feeling a bit sluggish.

This one is the complete opposite. It’s light, packed with vibrant veggies and tender chicken, yet it delivers that same soul-soothing goodness.

It’s my secret weapon for busy weeknights and lazy Sundays alike. The beauty of it, truly, is in its simplicity.

We’re talking about one dish, a handful of fresh ingredients, and a result that feels like you spent all day in the kitchen. You didn’t, of course, and that’s the best part. So, let’s roll up our sleeves and make something delicious.

Why This Recipe Just Works

Some recipes are fussy. They demand your constant attention and create a mountain of dishes. This isn’t one of those recipes. I designed it to fit into real life, where time is short and appetites are big.

First off, it all happens in one baking dish. You prep the veggies right in it, bake them, stir in the chicken, and top it with cheese. The cleanup is, frankly, a dream. You’ll have a full, hearty meal with just one pan to wash. That’s a win in my book.

It’s also incredibly forgiving. Don’t have Brussels sprouts? Use broccoli. No butternut squash? Try cauliflower. The recipe is a fantastic blueprint, ready for your personal touch. It’s the kind of meal that welcomes you to play around and make it your own.

Ingredients Needed for the Recipe

Gathering everything is half the battle. Here’s what you’ll need to create this cozy masterpiece. The chicken broth, let me tell you, is a game-changer – it steams the veggies and creates a little flavorful sauce that keeps everything wonderfully moist.

• Chicken Breasts: Boneless and skinless, cut into bite-sized pieces. They cook quickly and soak up all the great flavors.
• Butternut Squash: Diced. It adds a lovely, mild sweetness and beautiful color to the dish.
• Brussels Sprouts: Trimmed and halved if large. They get deliciously tender and almost nutty when roasted.
• Onion & Garlic: Sliced and minced. The essential aromatic base that makes the whole kitchen smell amazing.
• Smoked Paprika: Just a teaspoon gives a deep, cozy warmth without any heat.
• Olive Oil: For coating the veggies and searing the chicken. It helps everything get golden and tasty.
• Chicken Broth: The secret weapon. It steams the vegetables perfectly and adds a rich layer of savoriness.
• Cheddar Cheese: Shredded. Because everything is better with a melted, gooey, golden cheese blanket on top.
• Salt and Pepper: To taste. Always, always season as you go.

How to make Keto Chicken Casserole?

Ready? It’s easier than you think. We’ll start by getting those vegetables perfectly tender, then add the chicken, and finish it all under a layer of melted cheese. The oven does most of the work for you.

Step 1: Prep and Par-Bake the Veggies

Start by preheating your oven to 350°F. Grab a 9×13 inch baking dish and give it a light coating of oil or a quick spray. This is your one and only dish for the whole recipe.

Now, toss in your diced butternut squash, Brussels sprouts, sliced onion, and minced garlic. Drizzle the olive oil and sprinkle the smoked paprika over everything. Use your hands or a spoon to mix it all up, making sure every piece is lightly coated.

Pour the chicken broth into the corner of the dish – don’t pour it directly over the top, or you might wash off the seasoning. Cover the dish tightly with foil. This creates a steamy environment that will cook the vegetables through beautifully. Slide it into the oven for 20-25 minutes.

Step 2: Sear the Chicken

While the veggies are baking, let’s tackle the chicken. This step is quick but important. It adds a layer of flavor you just can’t get by adding raw chicken to the dish.

Season your bite-sized chicken pieces generously with salt and pepper. Heat a little oil in a skillet over medium-high heat. When the oil is shimmering, add the chicken in a single layer.

Let it sear, undisturbed, for a few minutes until you get a nice golden color on one side. Give it a stir and cook just until it’s no longer pink and is almost, but not totally, cooked through. It will finish in the oven.

Step 3: Combine and Cheese It Up

Carefully remove the baking dish from the oven. The vegetables should be fork-tender. Pull off the foil – watch out for the steam, it’s hot.

Take your seared chicken and all those tasty juices from the skillet and stir them right into the vegetables. Mix everything together so it’s well combined.

Now, for the grand finale. Sprinkle the shredded cheddar cheese evenly over the entire top. Be generous. Pop the dish back into the oven, uncovered this time, for 10-12 minutes.

Step 4: The Grand Finale

You’ll know it’s ready when the cheese is completely melted, bubbly, and maybe even has a few golden-brown spots. Your kitchen will smell absolutely incredible.

Take it out and let it sit for just 5 minutes. I know, the wait is tough. But this lets everything settle, and it will be much easier to serve. Then, just dig in. You’ve earned it.

Ingredient Swaps and Creative Twists

Strictly following a recipe is great, but cooking is more fun when you make it yours. This casserole is a fantastic canvas for whatever you have in the fridge or are craving.

First, the vegetables. The butternut squash and Brussels sprouts are a classic fall combo, but don’t feel locked in. Try broccoli or cauliflower florets for a cruciferous twist. Mushrooms and bell peppers add a wonderful earthiness and sweetness.

Even kale or spinach, stirred in with the chicken right before the final bake, works beautifully. They’ll wilt down perfectly. The goal is to use low-carb veggies you enjoy.

The protein is flexible, too. Leftover rotisserie chicken or shredded chicken from a meal prep day is a fantastic shortcut. Just stir it in with the veggies and skip the searing step. Chicken thighs, with their richer flavor, are also a delicious option.

And the cheese? Oh, the possibilities. A sharp white cheddar is my go-to, but a melty mozzarella, a nutty Gruyère, or even a pepper jack for a little kick would all be magnificent. Use what you love.

Tips

A few little nuggets of wisdom can make the difference between a good meal and a great one. Here are my tried-and-true tips for casserole success.

• Check for Doneness: The best way to know if your chicken is perfectly cooked is with a simple meat thermometer. It should read 165°F in the thickest piece.
• Add a Crunchy Topping: For a delightful texture contrast, sprinkle some keto breadcrumbs, crushed pork rinds, or even a handful of chopped nuts over the cheese before the final bake.
• Don’t Crowd the Skillet: When searing the chicken, cook it in batches if needed. Overcrowding the pan steams the chicken instead of giving it that desirable golden sear.
• Make it a Complete Meal: For a heartier plate, serve a scoop of this casserole over a bed of cauliflower rice. It soaks up the delicious juices wonderfully.
• Fresh Herbs are a Friend: A sprinkle of fresh thyme over the veggies before baking, or some chopped parsley over the finished dish, adds a bright, fresh finish.

Serving and Storing Your Masterpiece

This casserole is glorious straight from the oven, but its talents don’t end there. It’s a meal prep champion, and the leftovers might just be better than the first serving.

When serving, a simple side salad with a tangy vinaigrette is perfect. It cuts through the richness beautifully. For something heartier, those keto rolls or a creamy mashed cauliflower are fantastic partners.

Now, for storing. Let any leftovers cool completely before transferring them to an airtight container. They’ll keep happily in the fridge for 3-4 days. Reheating is easy – just pop a portion in the microwave until hot, or cover it with foil and warm it in a 350°F oven.

You can also freeze it. Portion it out, wrap it tightly, and freeze for up to 3 months. Thaw in the fridge overnight before reheating. It’s like giving your future self the best possible gift – a night off from cooking with a delicious dinner ready to go.

So there you have it. A dish that’s cozy, customizable, and completely uncomplicated. It’s the kind of recipe you’ll find yourself coming back to again and again, each time maybe with a little different twist. That’s the mark of a true keeper. Now, go preheat that oven. Dinner is waiting.

Print Recipe

0 Add to Favorites

Keto Chicken Casserole Recipe

Author: Sarah Onida Cooking Method: Baking Cuisine: American Courses: Dinner

Difficulty: easy Prep Time 15 mins Cook Time 35 mins Rest Time 5 mins Total Time 55 mins

Cooking Temp: 180  C Servings: 8 Estimated Cost: $ moderate Calories: 420

Best Season: Fall, Winter

Description

This keto chicken casserole is a comforting, low-carb one-dish meal full of tender chicken, seasonal vegetables, and melted cheese. Perfect for chilly nights or easy weeknight dinners, it’s simple to prepare, mostly hands-off, and ideal for meal prep!

ingredients

Scale

1/2x 1x 2x 3x

• 2 cups butternut squash (diced)
• 1 pound Brussels sprouts (trimmed)
• 1 large onion (sliced)
• 2 cloves garlic (minced)
• 1 teaspoon smoked paprika
• 1 tablespoon olive oil
• ¹⁄₂ cup chicken broth
• 2 pounds chicken breast (chopped into bite-sized pieces)
• ¹⁄₂ cup cheddar cheese (shredded)
• salt and pepper (to taste)

Instructions

1. Preheat your oven to 180°C (350°F). Lightly grease a 9 x 13-inch baking dish.
2. Add the butternut squash, Brussels sprouts, onion, garlic, smoked paprika, olive oil, and chicken broth to the baking dish. Mix well to combine.
3. Cover the dish with foil or a lid and bake for 20–25 minutes, or until the vegetables are fork-tender.
4. While the vegetables bake, heat a skillet over medium-high heat. Add a drizzle of oil, then season the chicken with salt and pepper. Sear until golden brown and almost cooked through (about 5–6 minutes).
5. Remove the baking dish from the oven, uncover, and stir in the seared chicken pieces.
6. Sprinkle shredded cheddar cheese evenly over the top.
7. Return to the oven (uncovered) and bake for another 10–12 minutes, or until the cheese is fully melted and bubbly.
8. Let rest for 5 minutes before serving.

Nutrition Facts

Servings 8

Serving Size 1 serving

---

Amount Per Serving

Calories 420kcal

% Daily Value *

Total Fat 23gg36%

Saturated Fat 8gg40%

Trans Fat 0gg

Cholesterol 125mgmg42%

Sodium 420mgmg18%

Potassium 980mgmg29%

Total Carbohydrate 12gg4%

Dietary Fiber 4gg16%

Sugars 4gg

Protein 40gg80%

---

Calcium 15 mg

Iron 2 mg

* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.

Note

• Use leftover chicken: Rotisserie chicken or leftovers from air fryer whole chicken work great—just skip the searing step.
• Make it heartier: Serve over cauliflower rice or with keto rolls to soak up the sauce.
• Switch up the veggies: Try broccoli, kale, mushrooms, asparagus, or bell peppers if you don’t have the listed ones.
• Add crunch: Top with keto breadcrumbs or crushed pork rinds before the final bake.

Keywords: keto chicken casserole, low carb chicken casserole, one dish keto dinner, cheesy chicken casserole, healthy keto recipe