You see, mine is a small oven that can only fit in a tray of twelve mini cupcakes nicely. What happen if the recipe I am following can make more than 12 ? Should I half the recipe, or should I get two trays? If I bake one first, can the batter wait? Will the waiting time allows chemical reaction to take place within the batter? I am sure some batter can survive the waiting time, some cannot. But I wouldn't know what can and what cannot.