Sausage Gravy Biscuit Pie (Easy Brunch Bake) - Quickie Recipe

Ingredients

• 1 tablespoon unsalted butter, softened, for greasing
• 1 can (16 oz / 454 g) refrigerated flaky biscuit dough
• 12 oz (340 g) pork breakfast sausage
• 2 tablespoons unsalted butter, as needed
• 1/4 cup (30 g) all-purpose flour
• 2 cups (480 ml) whole milk
• 1/2 teaspoon kosher salt, plus more to taste
• 1 teaspoon freshly ground black pepper
• 1/4 teaspoon garlic powder
• 2 large eggs
• 1 cup (115 g) shredded sharp cheddar cheese, divided
• 2 tablespoons chopped fresh chives