I've been doing a kit for wedding consultations. 5-6 cake flavors and about a dozen frostings, fillings in lil cups in a pretty gift bag. It works out because it takes about a half hour off of the consult and the couple enjoys the "gift". I always have extra batter so I just fill the little 4" square pans I have and make kits from them.
7/9/13 at 12:17am