You could, if the cups are oven safe, like Corning Ware. I used stoneware cups in the microwave for that 5 minute cake recipe. What cups are you thinking of using?
Found you a recipe - http://www.foodnetwork.com/recipes/gale-gand/hot-cocoa-cupcakes-recipe/index.html
After seeing the food science guy on Food Network devote an entire show to cupcakes and explaining that this is how cupcakes originated (by baking in actual teacups), I decided to do teacupcakes for my daughters birthday a couple of months ago - we did an Alice in Wonderland Tea Party. I lucked out and found real teacups at a thrift store (I chose the hardy ones as opposed to delicate cups) for something like a quarter a piece. One thing he did mention is not to grease the cups as the batter needs to be able to climb up the sides.
I didn't have time to personalize the cups like I thought I would so we didn't give them as favors but I think it's a fabulous idea. FWIW, the teacupcakes were a HUGE hit, everyone thought it was super cute.
Quote by @%username% on %date%
%body%