Chicken Broccoli Casserole

The first time I made this casserole, my apartment smelled so good that my neighbor actually knocked on my door to ask what I was cooking. It was a rainy Tuesday evening, and I needed something that felt like a hug in food form after a long day at work.

I brought this to a potluck last winter, and my friend Sarah literally messaged me the next morning demanding the recipe. Her kids, who usually refuse anything with broccoli, went back for seconds.

Ingredients

• 3 cups cooked chicken breast: Rotisserie chicken works perfectly here and saves so much time
• 4 cups broccoli florets: Fresh broccoli holds up better than frozen, but thawed frozen works in a pinch
• 1 small yellow onion: Finely chopped so it melts into the sauce rather than having obvious onion pieces
• 1 1/2 cups shredded cheddar cheese: Sharp cheddar gives the best flavor impact
• 1 cup sour cream: Makes the sauce incredibly creamy without being heavy
• 1/2 cup milk: Whole milk creates the best consistency, but whatever you have in the fridge works
• 1 can condensed cream of chicken soup: The not-so-secret ingredient that makes everything taste like home
• 1 cup cooked white rice: Totally optional, but stretches the casserole and makes it more filling
• 1/2 cup panko breadcrumbs: These create the most satisfying crunchy topping
• 2 tbsp unsalted butter, melted: Mixed with the panko to help it turn golden and crispy
• 1/2 tsp garlic powder: Adds a subtle depth that everyone notices but cannot quite place
• 1/2 tsp salt and 1/4 tsp black pepper: Basic seasoning that makes all the flavors pop
• 1/4 tsp paprika: Mostly for color, but adds a tiny warmth to the breadcrumb topping

Instructions

Get your oven ready:

Preheat to 375°F and grease a 9x13-inch baking dish with butter or cooking spray

Prep the broccoli:

Steam or blanch those florets for just 2 or 3 minutes until they are bright green but still have some crunch

Mix everything together:

In a large bowl, combine the chicken, broccoli, onion, one cup of cheddar cheese, soup, sour cream, milk, rice if you are using it, and all the seasonings

Spread it out:

Pour the mixture into your prepared baking dish and spread it evenly

Make the topping:

Stir together the panko, melted butter, and paprika in a small bowl

Add the layers:

Sprinkle the remaining half cup of cheese over the casserole, then cover with the buttered crumbs

Bake until golden:

Bake uncovered for 30 to 35 minutes until you see bubbling around the edges and the top is beautifully browned

Let it rest:

Wait about 5 minutes before serving so it sets up slightly and is easier to scoop

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This recipe became my go-to when my husband started working late nights. I could throw it together early, pop it in the oven when he called to say he was on his way home, and dinner would be ready the moment he walked through the door.

Making It Your Own

Swapping Greek yogurt for sour cream actually works surprisingly well if you are watching your fat intake. The texture stays creamy, though you might want to add an extra pinch of salt since Greek yogurt is less tangy than sour cream.

Freezing Instructions

I have found this casserole freezes beautifully, either before baking or after. If freezing unbaked, thaw overnight in the refrigerator before baking as directed, and add about 10 minutes to the baking time.

Serving Suggestions

A simple green salad with vinaigrette cuts through the richness perfectly. Crusty bread is also great for soaking up that creamy sauce.

• Try adding cooked bacon or sautéed mushrooms for extra depth
• Cream of mushroom soup can replace the chicken soup for a different flavor profile
• A squeeze of fresh lemon juice right before serving brightens everything up

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There is something so deeply satisfying about a casserole that makes the whole house feel warm and cozy. This is the kind of recipe that turns an ordinary Tuesday into something worth remembering.

Recipe FAQs

→ Can I use frozen broccoli instead of fresh?

Yes, frozen broccoli works perfectly. Thaw it completely and drain well before mixing with the other ingredients to prevent excess moisture in the final dish.

→ What can I substitute for cream of chicken soup?

Cream of mushroom soup adds an earthy flavor, or you can make a simple homemade sauce using butter, flour, chicken broth, and a splash of cream.

→ How long does this casserole keep in the refrigerator?

Store in an airtight container for up to 4 days. Reheat individual portions in the microwave or cover the entire dish with foil and warm at 350°F.

→ Can I make this ahead of time?

Assemble everything up to the baking step, cover tightly, and refrigerate for up to 24 hours. Add an extra 10-15 minutes to the baking time if baking cold from the refrigerator.

→ What sides pair well with this casserole?

A crisp green salad with vinaigrette balances the richness, while crusty bread or dinner rolls help soak up the creamy sauce. Roasted vegetables like carrots or green beans also complement nicely.