Peanut Butter Cups Recipe

In a small bowl, combine the confectioners' sugar, peanut butter, brown sugar, butter and vanilla; cover and set aside. In a microwave-safe bowl, melt chocolate chips and shortening. Pour teaspoonfuls into 2-in. foil muffin cups. Drop a rounded teaspoonful of peanut butter mixture into each cup; top each with 2 teaspoons of chocolate mixture. Refrigerate until set. Store in an airtight container. Yield: 3 dozen.