In a mixing bowl, cream shortening, sugar and egg. Combine dry ingredients; add to creamed mixture alternately with milk. Fill greased muffin tins two third full. Bake at 180ºC or 20-25 minutes or until golden. Let cool for 3-4 minutes. Meanwhile, combine the half cup of sugar and 1 teasp cinnamon in a cup. Roll warm muffins in melted butter, then in sugar-cinnamon mixture. Serve warm. Yield: 8-10