Preheat the oven to 375°F and place the oven rack in the middle level of the oven. Line a baking sheet with parchment paper or lightly grease a large muffin tin; set aside.
In a bowl, combine flour, sugar, baking powder, garlic powder, old bay seasoning, and salt.
Mix in the milk and butter; stir using a rubber spatula just until moist. Gently fold in cheese and parsley.
Scoop the batter evenly onto the prepared baking sheet or muffin tin. Place into oven and bake for 12-15 minutes, or until cooked in the center and serve. A toothpick inserted into the center should come out clean.