Before she opened her 300-square-foot sweets shop a block from Prospect Park, New Jersey native Katie Rosenhouse appeared on both the Food Network’s “Chopped” and “Sweet Genius” shows. Today you can watch her behind her own tiny counter, making the kind of high-brow/low-brow sweets — monkey buns, lavender shortbread, chocolate cake topped with peanut butter cream — that are hard to resist. Rosenhouse also finds room to make ice cream and sorbet, scooping six flavors at a time, including the tart tripe-berry sorbet shown above in a chocolate cone ($3). We recommend two desserts in one: an ice cream sandwich made with two of Rosenhouse’s excellent cookies. Pro tip: Before you get your sweet, tuck into a Christie’s Jamaican patty sold from the truck that’s usually parked just outside the shop.