01 -  Preheat oven to 425°F. Line a baking sheet with parchment paper. 
 02 -  Whisk together flour, baking powder, baking soda, sugar, and salt in a large mixing bowl. 
 03 -  Add cold cubed butter and use a pastry cutter or fork to blend until the mixture forms coarse crumbs. 
 04 -  Pour in cold buttermilk and gently stir until a shaggy dough comes together. 
 05 -  Transfer dough to a lightly floured surface, knead briefly 2 to 3 times, and flatten into a 3/4-inch thick rectangle. 
 06 -  Cut dough into 8 equal-sized pieces. 
 07 -  Flatten each piece slightly, add a generous tablespoon of shredded cheese and a spoonful of drained pickles to the center, then seal the dough around the filling. 
 08 -  Place biscuits seam-side down onto the prepared baking sheet. 
 09 -  Brush biscuit tops with melted butter and sprinkle with garlic powder if desired. 
 10 -  Bake 16 to 18 minutes, until golden brown and risen. 
 11 -  Allow biscuits to cool slightly before serving. They are best enjoyed warm.