In a bowl, cream shortening and brown sugar. Beat in egg and vanilla. Combine the flour, baking powder, baking soda, cinnamon and salt; gradually add to the creamed mixture. Stir in chopped candy bars and oats.
Drop by round tablespoonfuls 2 in. apart onto greased or parchment-lined baking sheets. Bake at 350° for 10-12 minutes or until lightly browned. Remove to wire racks to cool.