If you've spooned into an Oreo mug cake recipe, you know how deliciously easy it is to put these single-serving treats together. Though some attention must be focused to make sure the mug cake doesn't overflow and to check that the mug cake is ready to eat, the process of making the cake itself requires little effort. Even without any sort of culinary inclinations, remembering the simple instructions "3, 2, 1," can have you digging into a warm, spongy treat in minutes.