Some meals just beckon you to slow down and linger at the table a little longer. This beef chicken broccoli casserole is exactly that kind of dish. It’s the kind of dinner that fills the kitchen with warmth, the scent of melted cheese mingling with garlic and thyme, pulling you in even before you sit down. I remember one evening, distracted by a half-finished phone call, I almost forgot to check the oven. The bubbling cheese had started to brown just right, and that little pause made the difference between a good meal and one that felt like a small celebration.

Every bite offers a mix of textures—creamy sauce, tender chicken, hearty ground beef, and crisp-tender broccoli. It’s not flashy, but it’s the kind of comfort that sticks with you. I usually lean on casseroles when I need something that feeds a crowd without fuss, and this one hits the spot without being overwhelming in the kitchen. It’s the kind of dish you can tweak easily, too, depending on what you have on hand or what mood strikes.

Why You’ll Love It

Combines two proteins and a vegetable for a filling, balanced meal without extra sides.
The creamy sauce and three kinds of cheese create a satisfying texture mix—though it’s definitely on the richer side.
Hands-off baking time lets you multitask, perfect for busy weeknights or casual weekends.
It’s simple—and that’s kind of the point. No complicated steps, just reliable comfort food.
Great for leftovers, though it might lose some crispness when reheated.

Even if you’re new to casseroles, this one is straightforward enough to build confidence. It’s forgiving if you get a bit distracted or need to swap ingredients last minute.

Beef, Chicken, and Broccoli Casserole

Print Recipe

A hearty and comforting casserole combining ground beef, diced chicken, and fresh broccoli in a creamy sauce, topped with melted cheese and baked to perfection.

Prep Time: 20 minutes
Cook Time: 40 minutes
Total Time: 1 hour
Yield: 6

Ingredients

Scale

1 pound ground beef
1 pound boneless, skinless chicken breast, diced into 1/2-inch pieces
4 cups fresh broccoli florets
1 medium onion, diced
3 cloves garlic, minced
1 can (10.5 ounces) condensed cream of mushroom soup
1 cup sour cream
1/2 cup mayonnaise
1 cup shredded sharp cheddar cheese
1 cup shredded mozzarella cheese
1/2 cup grated Parmesan cheese
1/2 cup chicken broth
2 tablespoons olive oil
1 teaspoon salt
1/2 teaspoon black pepper
1/2 teaspoon dried thyme
1/2 teaspoon paprika

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Instructions

Preheat the oven to 350°F (175°C).
Bring a large pot of salted water to a boil. Add the broccoli florets and blanch for 2 minutes until bright green and slightly tender. Drain and set aside.
In a large skillet, heat 2 tablespoons olive oil over medium heat. Add the diced onion and cook for 3-4 minutes until translucent.
Add the minced garlic to the skillet and cook for 1 minute until fragrant.
Add the ground beef to the skillet. Cook, breaking it apart with a spoon, until browned and cooked through, about 6-8 minutes. Drain any excess fat.
Add the diced chicken pieces to the skillet with the beef and cook for 5-7 minutes until the chicken is no longer pink inside.
Season the meat mixture with salt, black pepper, dried thyme, and paprika. Stir well to combine.
In a large mixing bowl, combine the cream of mushroom soup, sour cream, mayonnaise, and chicken broth. Mix until smooth.
Add the cooked meat mixture and blanched broccoli to the bowl with the sauce. Stir gently to combine everything evenly.
Transfer the mixture to a greased 9×13-inch baking dish. Spread evenly.
Sprinkle the shredded cheddar cheese, mozzarella cheese, and grated Parmesan cheese evenly over the top.
Bake uncovered in the preheated oven for 30 minutes, or until the casserole is bubbly and the cheese is melted and golden brown.
Remove from the oven and let cool for 5 minutes before serving.

Kitchen Notes

This casserole doesn’t require special equipment, just a sturdy baking dish and a skillet for browning the meat and chicken. When it comes to serving, I like pairing it with a simple green salad or crusty bread to balance the richness. If you want to switch things up, you might try swapping the broccoli for cauliflower or adding mushrooms for an earthier note—though I haven’t tested all these variations extensively. You can also play with the cheese blend; using a sharper cheddar or mixing in some smoked cheese changes the flavor subtly but nicely. If you prefer a lighter sauce, you could reduce the mayo or sour cream a bit, but then it won’t be quite as creamy.

FAQ

Can I make this ahead of time? Yes, you can prepare the casserole up to the point of baking and refrigerate it overnight. Just add some extra baking time if it’s coming straight from the fridge.

Is it freezer-friendly? Absolutely. Freeze in an airtight container and thaw overnight before reheating. The texture might shift slightly but still tastes great.

Can I use frozen broccoli? You can, but blanching fresh broccoli really helps keep that bright color and crunch.

What if I don’t eat chicken? It’s fine to adjust the recipe to just beef or swap in turkey or sausage for different flavors.

If you’re craving a meal that feels like a warm hug after a long day, this casserole is ready to answer that call. Give it a try, and maybe let yourself get a little distracted by the smells coming from the oven—you won’t regret it.