Broccoli Cheddar Biscuit Casserole

Name: Broccoli Cheddar Biscuit Casserole
Prep time: 30 min
Cook time: 40 min
Total time: 70 min
Cuisine: American
Ingredients: 1 can refrigerated biscuits (8-count); 4 tablespoons unsalted butter, divided; 1 cup yellow onion, diced; 2 cloves garlic, minced; 1/3 cup all-purpose flour; 2 cups chicken broth; 2 cups whole milk, at room temperature; 4 cups broccoli florets, fresh or thawed from frozen; 1/2 teaspoon salt; 1/4 teaspoon ground black pepper; Pinch cayenne pepper, optional; 2 cups cooked chicken, shredded (optional); 2 cups sharp cheddar cheese, shredded; 1/2 cup sharp cheddar cheese, shredded; 3 tablespoons unsalted butter, melted; 1 teaspoon salt; 1 teaspoon garlic, minced; 1 tablespoon fresh parsley, chopped

Recipe by Sam Rivera · Updated September 2025

Casserole Bread & Sourdough

There's something magical about a casserole that marries flaky biscuits with creamy, cheesy broccoli goodness-it's comfort food at its finest. Home cooks adore this dish for its simplicity, crowd-pleasing appeal, and the way it transforms humble ingredients into a hearty, golden-topped masterpiece. Perfect for weeknight dinners or laid-back weekend gatherings, this casserole feels like a warm hug on a plate, especially when paired with a crisp salad or a steaming mug of tea. The contrast between the buttery biscuits and the rich, savory filling makes every bite irresistibly satisfying.

What Makes This Recipe Special

The flour roux is cooked just long enough to lose its raw taste but not so long that it browns, ensuring a silky, lump-free sauce that clings perfectly to the broccoli and chicken.
Sharp cheddar is used in two stages-first melted into the filling for a deep, tangy flavor, and then sprinkled on top of the biscuits for a gooey, melty crust.
Fresh broccoli is simmered until tender-crisp, preserving its vibrant color and texture while infusing the entire dish with a subtle earthy note.
The biscuits aren't just a topping-they're quartered and pressed slightly into the filling before baking, creating a "lattice" effect that soaks up the creamy sauce as it bakes.

⏱ 70 mins

American

Servings 8

Ingredients

1 canrefrigerated biscuits (8-count)

4 tablespoonsunsalted butter, divided

1 cupyellow onion, diced

2 clovesgarlic, minced

1/3 cupall-purpose flour

2 cupschicken broth

2 cupswhole milk, at room temperature

4 cupsbroccoli florets, fresh or thawed from frozen

1/2 teaspoonsalt

1/4 teaspoonground black pepper

Pinch cayenne pepper, optional

2 cupscooked chicken, shredded (optional)

2 cupssharp cheddar cheese, shredded

1/2 cupsharp cheddar cheese, shredded

3 tablespoonsunsalted butter, melted

1 teaspoonsalt

1 teaspoongarlic, minced

1 tablespoonfresh parsley, chopped

Nutrition

273 caloriesCalories

Per serving · Values are estimates

Instructions

Preheat the oven to 375°F and lightly grease a 9x13-inch baking dish.

Melt 2 tablespoons of unsalted butter in a skillet over medium heat. Add diced yellow onion and sauté until translucent and soft, about 8 minutes. Stir in minced garlic and cook for an additional minute.

Sprinkle all-purpose flour over the onion mixture. Whisk continuously for 1 minute to eliminate any raw flour taste.

Gradually pour chicken broth and whole milk into the skillet while whisking, ensuring a smooth, lump-free consistency.

Stir in broccoli florets, salt, black pepper, and cayenne if using. Allow the mixture to simmer for 12 to 15 minutes, stirring occasionally, until the broccoli is tender.

Remove skillet from heat. Add shredded cheddar cheese (2 cups) and cooked shredded chicken, if using. Stir until the cheese fully melts and the filling is creamy.

Transfer the filling to the prepared baking dish. Cut each biscuit into quarters and arrange them evenly over the filling.

Bake in the preheated oven for 35 to 40 minutes, or until the biscuits are golden brown and cooked through.

Combine melted butter, minced garlic, salt, and chopped parsley in a small bowl.

Brush the hot biscuits with the prepared garlic butter mixture upon removing the casserole from the oven. Let stand for 5 minutes prior to serving.

Essential Tips

Room temp milk matters

Using room-temperature milk prevents the sauce from curdling when added to the hot roux, ensuring a velvety, smooth consistency. If your milk is cold, warm it gently in the microwave for 20-30 seconds before using.

Don't skip the garlic butter

Brushing the biscuits with garlic butter right after baking adds a fragrant, savory punch that balances the richness of the cheddar. Skip the parsley if you're not a fan-it's purely for color.

Broccoli cut evenly

Cut florets into uniform, bite-sized pieces so they cook at the same rate and distribute evenly in the casserole. For extra tenderness, blanch them in boiling water for 1 minute before adding to the skillet.

Shred your own cheese

Pre-shredded cheese contains anti-caking agents that can make the sauce grainy. Freshly shredding sharp cheddar ensures a smoother melt and better flavor integration.

Press biscuits gently

After arranging the biscuit quarters over the filling, press them down lightly with a spatula to help them absorb the sauce. This prevents dry spots and ensures every bite is moist and flavorful.

Smart Swaps & Variations

Vegetarian Omit the chicken and replace the broth with vegetable broth for a lighter, plant-based version that still packs cheesy, broccoli-packed goodness.

Spicy kick Add 1/2 teaspoon of smoked paprika or a dash of hot sauce to the filling, or sprinkle crushed red pepper flakes over the biscuits before baking for a subtle heat.

Extra cheesy Swap half the sharp cheddar for pepper jack or gouda to add a smoky, slightly spicy note that pairs beautifully with the broccoli.

What to Serve With This

A crisp arugula salad tossed with lemon vinaigrette and shaved Parmesan to cut through the richness.
Warm apple cider or a dry white wine like Sauvignon Blanc to complement the creamy cheddar and savory notes.
Roasted sweet potato wedges dusted with smoked paprika for a hearty, autumnal side.
Buttered corn on the cob or a simple green bean almondine for a lighter, spring-inspired meal.

Storage & Reheating

Storage

Let the casserole cool completely, then cover tightly with foil or transfer to an airtight container. Store in the refrigerator for up to 3 days.

Reheating

Reheat covered in a 350°F oven for 15-20 minutes, or until warmed through. Avoid microwaving, as it can make the biscuits soggy and the cheese rubbery.

Expert Chef Tips

For a deeper flavor, deglaze the skillet with 1/4 cup of dry white wine after sautéing the onions but before adding the flour. Let it reduce by half before proceeding with the roux.
If the casserole seems too thick before baking, loosen it with an extra splash of milk or broth-aim for a consistency that's saucy but not soupy, as the biscuits will soak up liquid as they bake.
For extra browning, broil the casserole for the last 2-3 minutes of baking, watching closely to avoid burning the biscuits. This adds a subtle charred note that enhances the overall flavor.

Equipment You’ll Need

9x13-inch baking dish
Large skillet or saucepan
Whisk
Box grater or food processor (for shredding cheese)

Nutritional Benefits

A single serving (1/8 of the casserole) provides approximately 273 calories, with 18g of fat (mostly from cheddar and butter) and 10g of protein, largely from the chicken.
The dish is a good source of calcium (from the cheese) and vitamin C (from the broccoli), contributing to bone health and immune support.
Using whole milk and sharp cheddar boosts the dish's satiety factor, making it a satisfying meal that can help curb cravings for heavier comfort foods.
For a lighter version, swap whole milk for 2% and reduce the butter by half, though this may slightly alter the richness and texture of the sauce.

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Frequently Asked Questions

Can I use frozen broccoli?

Absolutely! Thaw and drain the broccoli well, then pat it dry with a paper towel to remove excess moisture. Frozen broccoli works just as well and can save time on prep.

What's the best way to shred cheese?

For the smoothest melt, shred the cheddar using the fine side of a box grater or a food processor. Pre-shredded cheese often contains anti-caking agents that can make the sauce grainy.

Can I make this ahead of time?

Yes! Assemble the casserole up to a day ahead, cover tightly, and refrigerate. When ready to bake, add 10-15 minutes to the baking time and tent with foil if the top browns too quickly.

How do I prevent the biscuits from getting soggy?

Press the biscuit quarters gently into the filling before baking to help them absorb some of the sauce. Also, avoid overmixing the filling-keep the broccoli pieces whole for better texture.

Can I substitute another cheese?

Pepper jack or Colby Jack work well for a milder flavor, while Gruyère or Monterey Jack add a nuttier, creamier depth. Avoid high-moisture cheeses like mozzarella, as they can make the sauce watery.

What's the best pan size?

A 9x13-inch baking dish is ideal for even cooking and crispy biscuit edges. If using a smaller dish, the casserole may bake unevenly, and the biscuits could dry out.

How do I reheat leftovers without drying them out?

Reheat covered in a 350°F oven for 15-20 minutes, or until warmed through. Add a splash of milk or broth to the dish before reheating to restore moisture.

Can I use biscuit dough instead of refrigerated biscuits?

Yes! Roll out 16 ounces of refrigerated biscuit dough into a 9x13-inch rectangle, then cut into quarters. This gives you more control over the thickness and ensures even baking.