Sunrise Biscuit Casserole

Name: Sunrise Biscuit Casserole
Ingredients: 5 cups all-purpose flour, plus more for dusting; 1 tablespoon baking powder; 1 tablespoon instant yeast; 1 1/2 teaspoons coarse or flaky sea salt; 1 teaspoon baking soda; 1 stick (1/2 cup) unsalted butter, cold and cubed; 1/2 cup shortening or lard, cold and cubed; 2 cups buttermilk; 2 tablespoons maple syrup; Nonstick cooking spray, for the pan; One 32-ounce bag frozen tater tots (about 70); 6 large maple breakfast sausages (approximately 1.8 pounds), removed from casings; 12 large eggs, whisked; Kosher salt and freshly ground black pepper; 1 cup shredded sharp Cheddar cheese; 4 tablespoons unsalted butter, melted