Preheat oven to 450 degrees.
In a large bowl, mix the flour, baking powder, baking soda, sugar, salt, garlic powder and cayenne pepper. Stir in the cheddar cheese and set aside.
2 c all-purpose flour, 2 tsp baking powder, ½ tsp baking soda, 1 tsp granulated sugar, ¾ tsp salt, ½ tsp garlic powder, ¼ tsp cayenne pepper, 1 c sharp cheddar cheese
In a separate bowl, mix the buttermilk and melted butter together until small lumps form.
1 c cold buttermilk, ½ c unsalted butter
Add the buttermilk to the large bowl with the flour and mix until a dough has formed and the ingredients are no longer dry. Do not overmix.
Lightly grease a ¼ cup and scoop out the dough with it. Place on a light colored, lightly greased baking sheet, leaving slightly more than an inch between each. You should have 10 total.
Bake for about 12 minutes, until they are golden brown.
While the biscuits are baking, combine melted butter, garlic powder, and parsley. Brush the tops of the biscuits when they come out of the oven and serve immediately.
2 tbsp melted butter, ½ tsp garlic powder, ¼ tsp dry parsley