J Gregory Lamp & Shade Gallery, Needham

Baker Adie Sprague, who made a splash as a participant on Food Network’s Cupcake Wars, showcases her meticulous dessert designs at Treat Cupcake Bar. She crafts at least a dozen flavors every day, including seasonal goodies such as candy apple—an apple cake smothered with cinnamon frosting. Adie also whips up separate batches for gluten-free and vegan patrons, such as chocolate cake crowned with mint cookies ‘n' cream frosting.

Rather than hog all the decorating fun for itself, Treat invites guests to make their very own creations at its namesake bar. There, you’ll find four varieties of both cake and frosting, plus more than 20 other toppings, such as Pop Rocks and chocolate-covered pretzels. To refine your decorating skills, sign up for one of Treat’s holiday-themed classes and learn to make seasonal shapes such as turkeys for Thanksgiving and smashed calculators for National Do Long Division by Hand Day.