Preheat oven to 400°F. Line a baking sheet with parchment paper and set aside.
In a medium bowl, mix flour, cheddar cheese, baking powder, garlic powder, salt, and parsley.
In a separate bowl, mix milk, egg, and butter. Pour into dry ingredients.
Mix until a sticky dough forms, being careful not to overmix it. If the dough is dry, add a splash of milk.
Divide dough into 8-10 mounds on prepared baking sheet, about 2" apart.
Bake for 12-14 minutes. Meanwhile, combine ingredients for topping.
Brush each biscuit with topping and return to oven for an additional 5 minutes.
