Creamy Chicken Broccoli Bake

The rainy Tuesday I first threw this together, I was working with leftover rotisserie chicken and a fridge full of broccoli that needed using. My daughter had declared she was too tired for dinner, but the smell of that cheesy, bubbling casserole had her peeking around the kitchen island before I even called everyone to the table.

I started making this during those hectic years when evening activities meant dinner had to be ready fast. Something about how the sour cream and cheddar melt together creates this incredibly velvety sauce that coats every single piece of chicken and broccoli.

Ingredients

• 3 cups cooked chicken breast: Rotisserie chicken works perfectly here, or use leftover roasted chicken for extra flavor
• 4 cups broccoli florets: Fresh gives the best texture, but frozen thawed works in a pinch just pat them dry
• 1 small yellow onion: Finely chopped so it melds into the sauce rather than staying in distinct pieces
• 1 1/2 cups shredded cheddar cheese: Divide this amount saving half for the topping helps create those gorgeous cheese pulls
• 1 cup sour cream: Full fat makes the sauce richer but Greek yogurt substitution works beautifully
• 1/2 cup milk: Whole milk creates the creamiest base without overpowering the other flavors
• 1 can condensed cream of chicken soup: The shortcut that binds everything together into that classic casserole consistency
• 1 cup cooked white rice: Optional but stretches the casserole and makes it feel more complete
• 1/2 cup panko breadcrumbs: These stay crunchier longer than traditional breadcrumbs under the broiler
• 2 tbsp unsalted butter: Melted and tossed with the panko for that golden, buttery topping
• 1/2 tsp garlic powder: Adds depth without the raw bite of fresh garlic
• 1/2 tsp salt: Enhances all the flavors without making it overly salty
• 1/4 tsp black pepper: Freshly cracked adds a little warmth and brightness
• 1/4 tsp paprika: Mostly for that beautiful golden color on the topping

Instructions

Get your oven ready:

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

Prep the broccoli:

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

Mix everything together:

In a large bowl, combine the chicken, broccoli, onion, one cup of cheddar, soup, sour cream, milk, rice if using, garlic powder, salt, and pepper

Spread it out:

Pour the mixture into your prepared dish and press it down gently with a spatula

Make the crispy topping:

Mix the panko with melted butter and paprika until every crumb is coated

Layer it on:

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

Bake until golden:

Put it in the oven for 30-35 minutes until you see bubbles around the edges and the top is beautifully browned

Let it rest:

Wait about 5 minutes before serving this helps the sauce set slightly so it doesnt run all over the plate

Save to Pinterest

My neighbor asked for the recipe after she smelled it baking through our shared wall. Now she makes it every Sunday for the week ahead, saying her teenage sons actually request it by name.

Make Ahead Magic

You can assemble this entire casserole the night before and keep it covered in the fridge. Just add about 10 minutes to the baking time since it will be cold going into the oven.

Freezer Friendly

This freezes beautifully either before or after baking. I like to make two and freeze one unbaked for those nights when cooking anything feels impossible.

Serving Suggestions

A simple green salad with vinaigrette cuts through the richness perfectly. Crusty bread for soaking up that extra sauce never hurts either.

• Crispy roasted green beans make a great side dish
• A glass of chilled white wine balances the creamy elements
• Fresh fruit for dessert lightens up the meal

Save to Pinterest

There is something deeply satisfying about a casserole that delivers this much comfort with so little fuss.

Questions & Answers About the Recipe

→ Can I make this ahead of time?

Absolutely. Assemble the entire casserole, cover tightly, and refrigerate for up to 24 hours before baking. Add the breadcrumb topping just before putting it in the oven for the crispiest results.

→ What type of chicken works best?

Cooked rotisserie chicken, leftover roasted chicken, or poached breast meat all work perfectly. Just ensure it's cooked through and diced or shredded into bite-sized pieces before mixing.

→ Can I use frozen broccoli?

Yes, frozen florets work well. Thaw and drain them thoroughly before adding to prevent excess moisture in the final dish. Fresh broccoli will maintain slightly more texture.

→ How do I store leftovers?

Store cooled portions in an airtight container in the refrigerator for 3-4 days. Reheat in the microwave or cover with foil and warm in a 350°F oven until heated through.

→ Can I freeze this casserole?

Yes, freeze before baking for best results. Wrap the assembled dish tightly in plastic and foil for up to 3 months. Thaw overnight in the refrigerator, then bake as directed, adding 5-10 minutes if needed.

→ What can I serve with this?

A simple green salad with vinaigrette balances the richness. Crusty bread, roasted vegetables, or buttered noodles also make excellent sides. The casserole is substantial enough to stand alone as a complete meal.