
This easy low carb rotisserie chicken and broccoli bake is a gluten free weeknight winner, loaded with tender shredded chicken, crisp-tender broccoli, and a creamy, cheesy sauce that comes together in under 40 minutes.

Some dinners just have a way of showing up exactly when you need them. This low carb rotisserie chicken and broccoli bake is that dish. It is the kind of recipe that feels like a treat but comes together with minimal effort, mostly pantry staples, and a store-bought rotisserie chicken that does half the heavy lifting for you.
Whether you are deep in a low carb routine, looking for a satisfying gluten free chicken bake the whole family will eat without complaint, or simply trying to get a hot, wholesome dinner on the table in under 40 minutes, this casserole delivers every single time. The sauce is rich and creamy, the broccoli stays tender with just a little bite, and that bubbling golden cheddar on top? It is genuinely hard to resist.
Using the right baking dish makes a difference when you want even heat distribution and a beautifully browned top. A quality 9x13 ceramic or glass dish and a reliable hand mixer for the sauce are two tools that genuinely elevate everyday casseroles like this one.
Let us talk about the humble rotisserie chicken for a moment, because it is doing serious work in this recipe. It is already seasoned, already cooked, and already incredibly flavorful. Using it in a gluten free chicken and broccoli casserole means you skip the step of cooking raw chicken entirely, which shaves a significant amount of time off your prep.
When you shred the meat, you get this beautiful mix of textures, some pieces more tender and pulling apart into long strands, others a little more toothsome. That variation makes every bite interesting in a way that plain poached or baked chicken simply cannot match.
Chef's Tip: Pull your rotisserie chicken while it is still slightly warm. Cold chicken from the fridge is harder to shred cleanly and tends to tear rather than pull. A few minutes in the microwave will loosen it right up.
One of the biggest wins in this easy gluten free chicken casserole is the sauce. So many casserole recipes rely on condensed cream of mushroom soup, which is usually loaded with sodium, thickeners, and occasionally gluten. This one skips all of that.
Instead, the base is built from cream cheese and sour cream, both naturally gluten free, both deeply savory, and both incredibly easy to work with. A splash of low sodium chicken broth loosens the mixture just enough to coat every piece of chicken and broccoli without making the casserole watery or heavy.
The seasoning blend is intentionally simple:
It is a combination that lets the quality of the chicken and the richness of the cheese do the talking.
Broccoli is the backbone of this dish, and it is worth taking sixty seconds to prepare it properly. Whether you are using fresh or frozen broccoli, the key is removing as much moisture as possible before it goes into the casserole.
For fresh florets, a quick 2-minute blanch in boiling salted water followed by a thorough drain is all you need. It softens the broccoli just enough so it bakes through evenly without turning to mush. For frozen broccoli, thaw it completely and then press it firmly between layers of paper towels.
Skipping this step is the number one reason casseroles end up soupy. Do not skip it.
Chef's Tip: Cut your broccoli florets into similar-sized pieces so they cook evenly. Aim for pieces roughly 1 to 1.5 inches across. Too large and they stay tough; too small and they disappear into the sauce.
This broccoli chicken bake is genuinely one of the best recipes you can have in your weekly rotation if you cook ahead. The entire casserole can be assembled the night before, covered tightly, and refrigerated until you are ready to bake. On busy weeknights, that is a game changer.
It also reheats beautifully, which means leftovers the next day are just as satisfying as the first serving. Pack it into containers for easy lunches or portion it out for a few nights of fuss-free dinners. As easy gluten free chicken casseroles go, this one is as practical as it is delicious.
Ready to make it? Here is the full step-by-step recipe:

This easy low carb rotisserie chicken and broccoli bake is a gluten free weeknight winner, loaded with tender shredded chicken, crisp-tender broccoli, and a creamy, cheesy sauce that comes together in under 40 minutes.
Preheat your oven to 400 degrees F (200 degrees C). Lightly grease a 9x13 inch baking dish with olive oil or nonstick spray.
If using fresh broccoli, blanch the florets in boiling salted water for 2 minutes, then drain well. If using thawed frozen broccoli, pat it dry thoroughly with paper towels to prevent a watery casserole.
In a large mixing bowl, beat together the softened cream cheese, sour cream, and chicken broth with a fork or hand mixer until smooth and creamy.
Stir in the minced garlic, onion powder, garlic powder, smoked paprika, salt, and pepper until fully combined.
Fold in the shredded rotisserie chicken and broccoli florets until everything is evenly coated in the creamy sauce.
Add 1 cup of the shredded cheddar cheese to the bowl and fold it in gently.
Transfer the mixture to the prepared baking dish and spread it out into an even layer.
Sprinkle the remaining 0.5 cup of cheddar cheese evenly over the top.
Bake uncovered for 22 to 25 minutes, until the cheese on top is melted, bubbly, and beginning to turn golden at the edges.
Remove from the oven and let the casserole rest for 5 minutes before serving. This helps the sauce set up slightly and makes it easier to scoop.
This casserole is hearty enough to serve on its own, but it also pairs beautifully with a few simple sides. A crisp green salad with a light lemon vinaigrette cuts through the richness perfectly. Cauliflower rice is a natural low carb pairing that soaks up any extra sauce on the plate.
If you want to mix things up, here are a few variations worth trying:
However you make it, this gluten free chicken broccoli casserole is the kind of recipe that earns a permanent spot in your weeknight dinner lineup.