Okay, listen up, because if you think low-carb cooking means bland, sad dinners, you haven’t met my Low Carb Chicken Broccoli Casserole yet. Seriously, this recipe changed my weeknight game forever. When I first started trying to cut back on carbs, I felt like I was missing out on all the great comfort food, especially cheesy bakes.
This casserole is the total opposite of sad. It’s rich, it’s unbelievably creamy thanks to a secret combination of cheeses and dairy, and it comes together faster than ordering takeout. I’m talking about getting this thing into the oven in under 20 minutes of prep time. That’s why I call it my “beginner’s magic trick.” You use simple pantry staples, toss everything together, and bake it until it’s bubbly perfection.
If you’re juggling busy schedules or just starting your low-carb journey, trust me on this one. This specific Low Carb Chicken Broccoli Casserole proves you don’t have to sacrifice flavor for simplicity. It’s the ultimate cozy meal that everyone in the house will actually ask you to make again.
Gather Your Ingredients for Low Carb Chicken Broccoli Casserole
Alright, you’ve got the oven preheating in your mind, now let’s get organized! The beauty of this dish is that everything gets mixed in one bowl, but you still need to have all your components ready to go. Don’t stress about chopping too much ahead of time; we’re keeping the prep quick.
Grab your cutting board and measuring cups. Here is exactly what you’ll need to pull off this amazing, cheesy bake. We’re using sharp cheddar because the flavor really pops against the creamy sauce. If you enjoy cheesy bakes, you might also like this cowboy jalapeno poppers with cheddar and cream cheese.
Ingredient Breakdown for Low Carb Chicken Broccoli Casserole
Take a good look at this list. Make sure your cream cheese is softened—that’s super important for a smooth sauce! All the quantities you need, plus notes on how to prep the chicken and veggies, are listed right below:
- 2 pounds boneless skinless chicken breasts cut into 1 inch cubes
- 1 teaspoon kosher salt
- 1 half teaspoon black pepper
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- 3 cups small broccoli florets
- 1 tablespoon olive oil
- 1 half cup finely diced yellow onion
- 2 cloves garlic minced
- 4 ounces cream cheese softened
- 1 cup sour cream
- 1 half cup mayonnaise
- 1 and one half cups shredded sharp cheddar cheese divided
- 1 quarter cup grated parmesan cheese
- 2 tablespoons chopped fresh parsley
Essential Tools for Making Low Carb Chicken Broccoli Casserole
You don’t need a ton of fancy gear for this, which is part of why I love it so much for busy nights. Having the right basics ready makes the assembly go lightning fast. Grab these things before you start seasoning that chicken!
- A good 9 by 13 inch baking dish – this is where the magic happens!
- One large skillet for cooking the onion and chicken.
- One very large mixing bowl—you need room to stir everything without making a mess!
- Measuring cups and spoons, naturally.
- A sturdy wooden spoon or silicone spatula for mixing.
Step-by-Step Instructions for Low Carb Chicken Broccoli Casserole
Okay, we have our ingredients and our tools. Now it’s time to put this incredible Low Carb Chicken Broccoli Casserole together! Remember, we’re only partially cooking the chicken first. This keeps it tender while it finishes baking in all that cheesy goodness later. Don’t worry if your chicken doesn’t look completely done when it comes off the heat—that’s exactly what we want!
Preparing the Chicken and Aromatics
First things first: get that oven going! Preheat it to 375 degrees Fahrenheit and make sure you grease that 9 by 13 inch baking dish. I usually use a little cooking spray or butter. Now, for the chicken. Take those 1-inch cubes and toss them in a big bowl with the salt, pepper, garlic powder, and onion powder. Get every single piece coated well. That seasoning base is crucial!
Next, heat your olive oil in that large skillet over medium heat. Toss in your diced onion and let them soften up—that takes about 3 or 4 minutes. When you smell them getting sweet, toss in the minced garlic. Be quick here; garlic burns fast! Just 30 seconds until it smells amazing, then add your seasoned chicken. Cook it until it’s lightly browned on the outside—about 6 to 8 minutes is what I find perfect. You’re aiming for an internal temp of about 150 degrees. Once it hits that, pull the whole skillet off the heat.
Creating the Creamy Low Carb Chicken Broccoli Casserole Sauce Base
While the chicken is cooling slightly, we make the sauce. This is where the keto magic happens! Grab your huge mixing bowl. Put in the softened cream cheese—and make sure it’s soft, or you’ll be whisking forever! Add the sour cream, the mayonnaise, one cup of your shredded cheddar, and all of that parmesan cheese. Now, whisk this together until it looks completely smooth and happy. No lumps allowed! If you see any lumps of cream cheese, just keep stirring; it’ll smooth out. If you are looking for more creamy recipes, check out this creamy baked chicken stroganoff.
Assembling and Baking Your Low Carb Chicken Broccoli Casserole
Time to combine! Dump the partially cooked chicken and those onions right into that creamy sauce bowl. Add your three cups of broccoli florets—I like them small so they fit nicely in every bite. Stir everything gently until that broccoli and chicken are totally covered in the sauce. Don’t overmix, or you might crush the broccoli too much.
Pour this whole glorious mixture into your prepared baking dish and spread it out evenly. Then, take that last half cup of sharp cheddar and sprinkle it right over the top. That’s your golden crust! Pop it into the 375 degree oven for 25 to 30 minutes. You want it hot, bubbly all over, and the chicken needs to hit 165 degrees internally. When it comes out, let it sit for five minutes—this helps everything settle. Then, sprinkle on that fresh parsley for color and serve it up!
Tips for Success with Your Low Carb Chicken Broccoli Casserole
Even though this is an easy recipe, a few little tricks make the difference between a good casserole and an absolutely fantastic one. I’ve learned these through trial and error, so you don’t have to!
- Don’t skip softening the cream cheese! If it’s cold, your sauce will be lumpy, and you’ll end up over-mixing everything trying to smooth it out. Let it sit on the counter while you chop your veggies.
- When cooking the chicken, you really only need it to get some color and come up to about 150 degrees. If you cook it all the way through now, it gets tough and dry after the final bake. Trust the process here!
- For that beautiful, golden crust on top, utilize the broiler, but watch it like a hawk. It only takes 2 or 3 minutes under the broiler at the very end to get perfectly browned cheddar, but it can go from golden to burned in about ten seconds flat!
- Use sharp cheddar. Seriously. The flavor gets muted when you mix it into a sauce, so using the sharp variety ensures you still get that cheesy bite we love in this Low Carb Chicken Broccoli Casserole.
Frequently Asked Questions About Low Carb Chicken Broccoli Casserole
I get so many questions about this dish because people are always trying to fit it into their meal plans, and that’s smart! It’s honestly one of the best things you can make for batch cooking during the week.
Can I make this Low Carb Chicken Broccoli Casserole ahead of time?
Absolutely! This is a dream for meal prep. You can mix the entire casserole—sauce, chicken, broccoli, everything—and put it into your baking dish. Cover it tightly with foil and pop it in the fridge for up to two days. When you’re ready to eat, just take the foil off and add that final layer of cheese, then bake it according to the directions. It might take about 5 to 10 minutes longer to heat through since it’s starting cold.
What cheese works best for this cheesy chicken recipe?
For the absolute best flavor in your cheesy chicken bake, stick with sharp cheddar. Mild cheddar just gets lost in the richness of the cream cheese and mayo. If you want to keep it strictly keto, make sure your parmesan is real, grated parmesan, not the powdery stuff in the green can, because that sometimes has anti-caking agents that can mess with the texture a little bit.
Can I use frozen broccoli instead of fresh?
You sure can, but you need to do one extra step! If you use frozen broccoli, you absolutely must thaw it completely and then pat it very, very dry with paper towels before adding it to the sauce. Frozen broccoli holds a ton of water, and if you don’t drain it well, you’ll end up with a watery casserole instead of a thick, creamy one. Nobody wants that!
Storing and Reheating Your Delicious Low Carb Chicken Broccoli Casserole
Once you’ve devoured most of this amazing dish—if there’s any left, that is!—storing it is super simple. Just let the casserole cool down on the counter for about 30 minutes after it comes out of the oven. Then, cover that baking dish tightly with plastic wrap or foil. It’ll keep beautifully in the fridge for about three to four days. I always save leftovers for lunch the next day! You can find more great tips on our Facebook page.
When you’re ready to reheat, you have two choices. If you’re just heating up a single serving, the microwave works great—just heat it until it’s steaming hot all the way through. If you’re reheating the whole pan, cover it with foil and pop it back into a 350 degree oven until it’s bubbly again. Always make sure that chicken reaches a safe 165 degrees Fahrenheit internally before you take a bite, just to be safe. It tastes almost as good the second day, I promise!
Share Your Low Carb Chicken Broccoli Casserole Experience
I really hope this creamy bake becomes a staple in your house like it is in mine. Cooking is all about sharing what works, so once you try this Low Carb Chicken Broccoli Casserole, I want to hear all about it! Feel free to share your results on Pinterest too.
Did you add extra garlic? Did your family ask for seconds? Let me know in the comments below, and don’t forget to give it a quick star rating! Happy cooking, friends! You can also read more from us on Medium.
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Amazing 1-Dish Low Carb Chicken Broccoli Casserole
- Total Time: 55 minutes
- Yield: 6 servings
- Diet: Low Carb
Description
Creamy low carb chicken casserole with broccoli and cheddar. This easy recipe is family-friendly and perfect for busy weeknights or meal prep.
Ingredients
- 2 pounds boneless skinless chicken breasts cut into 1 inch cubes
- 1 teaspoon kosher salt
- 1 half teaspoon black pepper
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- 3 cups small broccoli florets
- 1 tablespoon olive oil
- 1 half cup finely diced yellow onion
- 2 cloves garlic minced
- 4 ounces cream cheese softened
- 1 cup sour cream
- 1 half cup mayonnaise
- 1 and one half cups shredded sharp cheddar cheese divided
- 1 quarter cup grated parmesan cheese
- 2 tablespoons chopped fresh parsley
Instructions
- Preheat the oven to 375 degrees Fahrenheit. Lightly grease a 9 by 13 inch baking dish.
- In a large bowl, toss the cubed chicken with salt, black pepper, garlic powder, and onion powder until evenly coated.
- Heat olive oil in a large skillet over medium heat. Add the diced onion and cook for 3 to 4 minutes until softened. Stir in the minced garlic and cook for 30 seconds until fragrant.
- Add the seasoned chicken to the skillet in a single layer. Cook for 6 to 8 minutes, stirring occasionally, until the chicken is lightly browned but not fully cooked through. The internal temperature should reach about 150 degrees Fahrenheit at this stage. Remove from heat.
- In a large mixing bowl, stir together the softened cream cheese, sour cream, mayonnaise, 1 cup of the shredded cheddar, and parmesan cheese until smooth.
- Add the partially cooked chicken, sautéed onion mixture, and broccoli florets to the bowl. Stir until everything is evenly coated in the creamy sauce.
- Transfer the mixture to the prepared baking dish and spread into an even layer. Sprinkle the remaining 1 half cup cheddar cheese over the top.
- Bake uncovered for 25 to 30 minutes, until the casserole is hot and bubbly and the chicken reaches an internal temperature of 165 degrees Fahrenheit.
- Let rest for 5 minutes before serving. Sprinkle with chopped fresh parsley just before serving. Cook chicken to an internal temperature of 165 degrees Fahrenheit as measured with a food thermometer.
Notes
- For extra browning on top, broil for 2 to 3 minutes at the end of baking while watching closely.
- Prep Time: 20 minutes
- Cook Time: 35 minutes
- Category: Casserole
- Method: Bake
- Cuisine: American
