Preheat oven to 400 degrees. Grease a baking sheet with non stick cooking spray and set aside. In a large bowl, combine flour, baking powder, salt and sugar. Cut butter into dry ingredients until it is similar to coarse meal. Stir in cheeses, green onions and milk until moist. Flour board, and roll dough out to be 1-1 1/2 inches thick--it will be sticky if you don't use enough flour. Cut into small circles and place onto prepared baking sheet. Brush tops with cream and bake 12-15 minutes until golden brown. Serve with butter or make little sandwiches. Store in air tight container for up to 3 days.