Almost 4 weeks ago, Yvonne Bartrand took the leap with her wholesale bakery business, opening A Piece of Cake bake shop (723 Main, 406-3440) in Dartmouth. “It’s fantastic,” she says, raving about the new operation, which is modeled after the Magnolia Bakery in New York, a place to get cupcakes and treats. “We cater to the sweet tooth,” she says, offering cookies and cinnamon rolls, but no bread. A Piece of Cake will cater your birthday parties or event, including summer camp stuff, and has fair trade organic coffee and teas. In Halifax, look for A Piece of Cake delights