1-1/2 cups all-purpose flour
In a bowl, combine flour, baking powder and salt; set aside. Combine sour cream and the egg; mix well. Stir into dry ingredients just until moistened. Turn onto a lightly floured surface; knead gently 4-5 times. Roll to a 1/2-inch thickness; cut with a 2-1/2 -inch biscuit cutter. Place on a greased baking sheet. Bake at 425 degrees for about 10 minutes or until lightly browned.
In a blender or food processor, process ham until finely minced. Add butter and continue processing until well mixed. Spread over warm biscuits.