1. Preheat oven to 350 degrees. In a large bowl mix together the cake mix and baking powder, set aside. In a small bowl whisk together the eggs, oil, and vanilla. Add mixture to the cake mix, beat with an electric mixer until well blended. Add M&M's (reserve small amount to put in the tops to make them pretty) stir in with a wooden spoon.

2. Roll in to 1 inch balls and place them 2 inches apart onto an ungreased cookie sheet. Use reserved M&M's to press randomly into tops of cookie balls for decoration. Bake 9 minutes. Cool on the baking sheet for 2 to 3 minutes, then transfer to wire rack.