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Broccoli Cheddar Biscuit Chicken Casserole Recipe

4.7 from 122 reviews

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.

Ingredients

Scale

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

  1. 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.
  2. 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.
  3. Add Garlic: Add the minced garlic to the skillet and cook for an additional 1 minute until fragrant.
  4. 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.
  5. Add Broth and Milk: Slowly pour in the chicken broth and whole milk while whisking constantly to avoid lumps. Continue whisking until smooth.
  6. 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.
  7. Prepare Biscuits: While the broccoli is cooking, open your can of biscuits or prepare homemade buttermilk biscuits as per recipe instructions.
  8. 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.
  9. Transfer to Baking Dish: Remove skillet from heat and transfer the creamy broccoli, chicken, and cheese mixture into the prepared 13×9 baking dish.
  10. Top with Biscuits: Place 6 biscuits evenly spaced on top of the casserole mixture.
  11. Bake: Bake the casserole in the preheated 375°F oven for 15 minutes or until the biscuits are golden brown and cooked through.
  12. Make Garlic Butter: While casserole bakes, combine melted butter, kosher salt, minced garlic, and fresh parsley in a small bowl to create garlic butter.
  13. 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.
  14. 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