01 -  Preheat oven to 425°F. Line a baking sheet with parchment paper. 
 02 -  In a large mixing bowl, whisk together flour, baking powder, baking soda, sugar, and salt. 
 03 -  Add cold butter and use a pastry cutter or fork to blend until the mixture forms coarse crumbs. 
 04 -  Pour in cold buttermilk and stir only until a shaggy dough is formed. 
 05 -  Transfer dough onto a lightly floured surface, knead gently 2 to 3 times, and flatten to a 3/4-inch thick rectangle. 
 06 -  Cut the dough into 8 equal pieces. 
 07 -  Slightly flatten each piece, place a heaping tablespoon of cheddar cheese and a spoonful of pickles in the center, then pinch edges to seal. 
 08 -  Place stuffed biscuits, seam-side down, onto prepared baking sheet. 
 09 -  Brush tops with melted butter, sprinkle garlic powder if desired. 
 10 -  Bake for 16 to 18 minutes, until biscuits are golden brown and risen. 
 11 -  Cool slightly before serving; biscuits are best enjoyed warm.