There’s something about a casserole bubbling in the oven that slowly fills the house with the scent of home and warmth. This chicken broccoli rice casserole with mushroom soup is exactly that kind of dish — unpretentious, comforting, and perfect for those evenings when you want to settle into something familiar. Imagine the gentle steam rising as you pull it out, the golden cheese crust slightly crisp, and the tender broccoli nestled inside, giving the whole thing a fresh pop of green.

I remember one night, somewhere between getting distracted by a text and almost forgetting the timer, that first bite was a little hotter than expected but totally worth it. The creamy mushroom soup blends seamlessly with the shredded chicken and rice, while the subtle thyme and sautéed onions add a whisper of earthiness. It’s the kind of meal you don’t rush through but savor slowly, maybe paired with a simple salad or just a glass of cold water because sometimes that’s all you need.

It’s a hands-off kind of dish that fills your kitchen with inviting aromas while you do other things.
The combination of cheese and mushroom soup makes it creamy but not too heavy.
Broccoli adds freshness, but if you’re not a fan, you can probably swap in another veggie you like better.
It’s simple — and that’s kind of the point. No fuss, just comfort.
Leftovers reheat well, but honestly, it’s best fresh from the oven.

Don’t worry if you’re not a pro at casseroles; this one is forgiving. You can adjust the cheese layers or even sneak in some extra garlic if you feel like it. It’s your cozy night in, after all.

Chicken Broccoli Rice Casserole with Mushroom Soup

Print Recipe

A comforting and easy-to-make chicken broccoli rice casserole featuring tender chicken, fresh broccoli, creamy mushroom soup, and fluffy rice baked to perfection.

Prep Time: 15 minutes
Cook Time: 45 minutes
Total Time: 1 hour
Yield: 6

Ingredients

Scale

2 cups cooked white rice
2 cups cooked chicken breast, shredded
3 cups fresh broccoli florets
1 can (10.5 ounces) condensed cream of mushroom soup
1 cup sour cream
1/2 cup shredded cheddar cheese
1/2 cup shredded mozzarella cheese
1/2 cup milk
1 small onion, finely chopped
2 cloves garlic, minced
2 tablespoons unsalted butter
1/2 teaspoon salt
1/4 teaspoon black pepper
1/4 teaspoon dried thyme
1/4 cup grated Parmesan cheese

Cook Mode Prevent your screen from going dark

Instructions

Preheat the oven to 350°F (175°C).
Steam the broccoli florets until tender but still crisp, about 4-5 minutes. Drain and set aside.
In a large skillet, melt the butter over medium heat. Add the chopped onion and minced garlic, and sauté until the onion is translucent, about 3-4 minutes.
In a large mixing bowl, combine the cooked rice, shredded chicken, steamed broccoli, sautéed onion and garlic, cream of mushroom soup, sour cream, milk, salt, black pepper, and dried thyme. Stir until everything is evenly mixed.
Transfer the mixture into a greased 9×13 inch casserole dish and spread it out evenly.
Sprinkle the shredded cheddar cheese and mozzarella cheese evenly over the top of the casserole.
Sprinkle the grated Parmesan cheese on top of the shredded cheeses.
Bake uncovered in the preheated oven for 35-40 minutes, or until the casserole is bubbly and the cheese is melted and golden brown.
Remove from the oven and let it rest for 5 minutes before serving.

For kitchen tools, no fancy gadgets are needed — just a sturdy casserole dish and a skillet for sautéing the onions and garlic. When serving, a crisp side salad or some crusty bread can round out the meal nicely. If you want to switch things up, I’ve sometimes swapped out mozzarella for pepper jack for a little kick, or added a touch of smoked paprika for depth, though I’m still testing how that changes the balance. And if you don’t have fresh broccoli, frozen works fine too, just be sure to drain it well.

FAQ

Can I make this ahead of time? Yes, you can assemble it a day before and bake when ready. Just keep it covered in the fridge.

What if I don’t have mushroom soup? You can substitute with cream of chicken or celery soup, but it will change the flavor a bit.

Is this dish freezer-friendly? Absolutely. Freeze in portions and thaw overnight before reheating.

Can I use brown rice instead? You can, but note the texture will be a little different and cooking times might vary.

Ready to give this cozy casserole a try? Save this recipe for your next dinner when you want something easy, warm, and satisfying.