The customizable, made-to-order format works for bowls and pizzas—so why not doughnuts? That’s the premise behind this 12-year-old chain, which focuses on warm cake doughnuts topped with a choice of icings and toppings such as peanuts, marshmallow and salted caramel. Stores feature a viewing area, so guests can watch the doughnut-making process. The chain is currently testing online ordering, with plans to roll the program out nationwide by the end of the year.