preheat oven to 375°, lightly butter 9x13 baking dish or baking sheet.
Mix flour, baking powder, sugar, and salt together in a large bowl.
Cut shortening/butter in with a pastry cutter, until there are no large lumps.
Whisk buttermilk and egg together in separate bowl.
Make a well in the middle of flour mixture, pour in wet ingredients. Gently combine with a fork or spatula. Do not over mix. Dump out onto a well floured surface, pat dough into a round 1/2-3/4 inch thick.
Using a 2 inch round cookie cutter or a small juice cup, but 12 biscuits and place in buttered pan. Bake at 375° for 15-20 minutes.