Pre-heat oven to 425 degrees F. Place flour, baking powder, sugar and salt into bowl of food processor. Add cheese, scallions and granulated garlic. Pulse a couple of times to combine. Cut cold butter into small chunks and add to flour mixture. Pulse about 6-7 times until dough resembles rough crumbs. Add buttermilk and pulse a couple more times, just until dough comes together.
Turn dough out onto floured surface ad roll into a rough rectangle about an inch thick. Fold it over and gently roll out again. Repeat 6 times.
Gently roll dough some more to form a rough rectangle. Cut out biscuits with a floured cookie cutter. Do not twist cookie cutter when cutting: this crimps the edges and causes biscuits not to rise. If you have scraps, reform rectangle and cut additional biscuits.
Place biscuits on a parchment lined baking sheet and place in the pre-heated oven. bake until golden brown. Approximately 9-11 minutes. Brush with melted butter and serve. (Mine took exactly 10 minutes) Recipe makes about 30 little biscuits.