Los Angeles-based SusieCakes has been open about a month in the Bon Air Shopping Center in Marin, and I've been meaning to visit with each passing day. I was doing errands in the area the other day and decided to stop in and see what all the fuss was about. I'd heard about their "frosting-filled cupcakes" and I thought it was a genius idea for all of us who use the cupcake as a socially acceptable excuse to eat frosting. And lots of it. What I didn't expect to find was the huge celebration of Valentine's Day in full effect--from sweet little cookies to festive whoopie pies.