Take your favorite cake recipe, bake and let cool. Before frosting, make sure your cake is shorter than a kit-kat bar, if not trim some off the top to leave room for the M&M;’s. Frost with your favorite frosting. Take a bunch of kit-kat bars (about 4 large packages), cut or gently break each bar into two sections. Place the bars on the cake, gently pushing into the frosting. Tie with a ribbon and fill the center with M&M;’s (about 1 large bag). You can leave some out to pour around the base of your cake.