Broccoli Cheddar Biscuit Chicken Casserole Recipe
Introduction
This Broccoli Cheddar Biscuit Chicken Casserole is a comforting and hearty dish perfect for family dinners. Creamy, cheesy, and topped with golden biscuits, it combines simple ingredients into a flavorful meal that everyone will love.

Ingredients
- 1 recipe homemade buttermilk biscuits OR canned
- 4 tablespoons unsalted butter
- 1 large yellow onion, finely diced (about 1 cup)
- 4 teaspoons garlic, minced
- ⅓ cup (42 g) all-purpose flour
- 2 cups (480 g) chicken broth
- 2 cups (490 g) whole milk, room temperature
- 4 cups (364 g) broccoli florets
- 1 teaspoon kosher salt
- 1 teaspoon black pepper
- ½ teaspoon cayenne pepper, more or less to taste
- 2 cups (140 g) large rotisserie chicken, finely shredded
- 2 ½ cups (226 g) sharp cheddar cheese, shredded
- 4 tablespoons butter, melted
- 1 teaspoon kosher salt (for garlic butter)
- 2 teaspoons garlic, minced (for garlic butter)
- 1 tablespoon fresh parsley, minced (for garlic butter)
Instructions
- Step 1: Preheat the oven to 375°F (190°C) and lightly butter a 13×9-inch baking dish.
- Step 2: In a large skillet over medium heat, add 4 tablespoons of unsalted butter and heat until melted.
- Step 3: Add the diced onion to the butter and cook until translucent, about 8 minutes. Stir in the minced garlic and cook for an additional minute.
- Step 4: Sprinkle in the flour and whisk continuously until lightly browned, about 1 minute.
- Step 5: Slowly pour in the chicken broth and milk while whisking constantly to prevent lumps.
- Step 6: Add the broccoli florets, kosher salt, black pepper, and cayenne pepper. Bring to a simmer and cook uncovered, stirring occasionally, for 12-15 minutes until the broccoli is tender.
- Step 7: While the broccoli cooks, open your can of biscuits or prepare your homemade biscuits.
- Step 8: Once broccoli is tender, stir in the shredded chicken and cheddar cheese until the cheese melts completely.
- Step 9: Remove the skillet from heat and transfer the mixture into the prepared baking dish.
- Step 10: Place 6 biscuits evenly on top of the casserole.
- Step 11: Bake in the preheated oven for 15 minutes or until the biscuits are golden brown.
- Step 12: While baking, make the garlic butter by combining melted butter, kosher salt, minced garlic, and fresh parsley in a small bowl.
- Step 13: When the casserole comes out of the oven, brush the tops of the biscuits with the garlic butter mixture.
- Step 14: Serve warm and enjoy your comforting Broccoli Cheddar Biscuit Chicken Casserole!
Tips & Variations
- Use fresh broccoli for the best texture, but frozen florets can be a convenient substitute—just thaw before cooking.
- For extra creaminess, add a splash of heavy cream along with the milk.
- Swap out rotisserie chicken for cooked turkey or leftover chicken to reduce prep time.
- Sprinkle some extra cheddar cheese on top of the biscuits before baking for an extra cheesy crust.
- If you like a bit more heat, add an extra pinch of cayenne or some chopped jalapeños to the casserole.
Storage
Store leftover casserole in an airtight container in the refrigerator for up to 3 days. Reheat individual portions in the microwave or warm the whole dish in a 350°F (175°C) oven until heated through. To keep the biscuits from becoming soggy when reheating, you can reheat the biscuit topping separately in the oven.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use frozen broccoli instead of fresh?
Yes, frozen broccoli works well. Just be sure to thaw and drain it before adding to avoid excess moisture in the casserole.
Can I make this casserole ahead of time?
Absolutely! Prepare the casserole up to the point of baking, cover it tightly, and refrigerate for up to 24 hours. Bake it directly from the fridge, adding a few extra minutes to the baking time if needed.
PrintBroccoli Cheddar Biscuit Chicken Casserole Recipe
A comforting and hearty Broccoli Cheddar Biscuit Chicken Casserole featuring tender shredded rotisserie chicken, fresh broccoli, melted sharp cheddar cheese, and a creamy savory sauce topped with golden homemade or canned buttermilk biscuits brushed with garlic butter.
- Prep Time: 15 minutes
- Cook Time: 35 minutes
- Total Time: 50 minutes
- Yield: 6 servings 1x
- Category: Casserole
- Method: Baking
- Cuisine: American
Ingredients
Casserole Base
- 4 tablespoons unsalted butter
- 1 large yellow onion, finely diced (about 1 cup)
- 4 teaspoons garlic, minced
- ⅓ cup (42 g) all-purpose flour
- 2 cups (480 g) chicken broth
- 2 cups (490 g) whole milk, room temperature
- 4 cups (364 g) broccoli florets
- 1 teaspoon kosher salt
- 1 teaspoon black pepper
- 1/2 teaspoon cayenne pepper, more or less to taste
- 2 cups (140 g) large rotisserie chicken, finely shredded
- 2 1/2 cups (226 g) sharp cheddar cheese, shredded
Biscuit Topping
- 1 recipe homemade buttermilk biscuits OR canned biscuits (6 biscuits)
Garlic Butter Topping
- 4 tablespoons butter, melted
- 1 teaspoon kosher salt
- 2 teaspoons garlic, minced
- 1 tablespoon fresh parsley, minced
Instructions
- Preheat Oven and Prepare Baking Dish: Preheat the oven to 375°F. Lightly butter a 13×9 inch baking dish to prevent sticking and set aside.
- Sauté Onion: In a large skillet over medium heat, melt the unsalted butter. Add the finely diced onion and cook until translucent, about 8 minutes, stirring occasionally to prevent burning.
- Add Garlic: Add the minced garlic to the skillet and cook for an additional 1 minute until fragrant.
- Create Roux: Sprinkle the all-purpose flour into the skillet and whisk continuously for about 1 minute until the mixture is lightly browned, which will thicken the sauce.
- Add Broth and Milk: Slowly pour in the chicken broth and whole milk while whisking constantly to avoid lumps. Continue whisking until smooth.
- Simmer with Broccoli and Seasonings: Add the broccoli florets, kosher salt, black pepper, and cayenne pepper into the sauce. Bring the mixture to a simmer and cook uncovered for 12-15 minutes, stirring occasionally, until the broccoli is tender.
- Prepare Biscuits: While the broccoli is cooking, open your can of biscuits or prepare homemade buttermilk biscuits as per recipe instructions.
- Add Chicken and Cheese: Once broccoli is tender, stir in the shredded rotisserie chicken and shredded cheddar cheese. Stir until the cheese melts and the mixture is well combined.
- Transfer to Baking Dish: Remove skillet from heat and transfer the creamy broccoli, chicken, and cheese mixture into the prepared 13×9 baking dish.
- Top with Biscuits: Place 6 biscuits evenly spaced on top of the casserole mixture.
- Bake: Bake the casserole in the preheated 375°F oven for 15 minutes or until the biscuits are golden brown and cooked through.
- Make Garlic Butter: While casserole bakes, combine melted butter, kosher salt, minced garlic, and fresh parsley in a small bowl to create garlic butter.
- Brush Biscuits: Remove casserole from oven and immediately brush the tops of the biscuits generously with the garlic butter mixture for added flavor and moisture.
- Serve and Enjoy: Allow casserole to cool slightly before serving. Enjoy this warming dish as a complete meal perfect for any occasion.
Notes
- You can use homemade buttermilk biscuits or good-quality canned biscuits depending on time and preference.
- Adjust the cayenne pepper to your desired heat level or omit if you prefer no spice.
- Leftovers can be stored in an airtight container in the refrigerator for up to 3 days and reheated in the oven.
- For a lower-fat version, substitute whole milk with 2% milk and use reduced-fat cheddar cheese.
- Make sure to stir the sauce thoroughly when adding broth and milk to prevent lumps from forming in the roux.
Keywords: Broccoli casserole, chicken casserole, cheddar biscuit topping, comfort food, easy dinner recipe

