Even in a tired economy, there are some types of businesses that are still raking in the dough. But these lucky few aren’t pawning off gold bars and diamonds – you’d be surprised to know that sweet treats (cupcakes especially) are one of the few consumer goods experiencing a major boom even as Americans are holding tight to their pennies. What’s the secret ingredient to their success? Read on to see why and how some smart entrepreneurs are turning their batter into ‘dough.’