For a colorful and fun birthday cake, try making an M&M's chocolate chip cake. Using a food processor, you can easily mix the batter and incorporate chocolate chips and M&M's. The cake is moist, chocolatey, and filled with bursts of chocolate and candy goodness. Top it with a smooth chocolate ganache and decorate with more M&M's for a festive touch. It's a perfect choice for a kid's birthday party.