"An easy, fuss-free, one-bowl, no-mixer recipe everyone will love and it’s an easy recipe to memorize because everything is ‘one’. In the 1 bowl used, melt 1 stick of butter, stir in 1 egg, 1 cup of brown sugar, 1 tablespoon vanilla, 1 cup flour. For this version there’s Oreos and M&M's added. Mint M&Ms or mint Oreos would be a great touch. The bars are loaded with goodies in every bite. Crunchy Oreos and crisp M&M's are a great texture contrast to the soft, buttery bars...."