Needham's Treat Cupcake Bar is expanding into the space next door and debuting a new concept called The Dessert Workshop, according to posts on Facebook. It should open this fall.
"The Dessert Workshop is a first of its kind dessert experience," according to the page. "Come in and build your own unique dessert (cupcake, sundae, parfait in a mason jar, pie, and more) using our tools or choose from one of our pre-made creations!"
Treat Cupcake Bar also has a location in Chestnut Hill.