We get this question all the time! Every size cup* that is microwave-safe will work with our mug cakes. We recommend using a 6-8oz mug. If you use a larger mug, the finished mug cake will not fill to the top, but will give you added space for toppings.
Remember, our mug cakes are decadent and filling - just the perfect amount!
*We have used ramekins and small ice cream cups for our mug cakes. If you do not want to dirty any dishes, a paper cup also works great!