preheat oven to 425 degrees

place 2 cups flour, baking powder and salt into mixing bowl

with mixer on low, slowly add butter pieces and butter is the size of peas

combine buttermilk, 1 egg and beat lightly - add to flour mixture slowly

in small bowl combine cheddar with small amount of flour - add to mixer slowly

turn off mixer - transfer dough to well floured board and lightly knead (6 times)

roll dough into rectangle (10x5 inches)

cut into 8 biscuits

transfer to pan lined with parchment paper

coat with egg / milk mixture (1 egg with 1 tbsp milk - mixed)

bake 20-25 minutes until tops browned and cooked through)