A year ago, Ruth Lundquist and Darcy Olson were working moms struggling to get dinner on the table for their families. Today the suburban Minneapolis, Minn., residents are putting dinner on the table for hundreds of people every month. Their new business, Let's Dish, is one of a growing number of meal-assembly services across the U.S. that help busy amateur chefs whip up a month of gourmet entrees in a couple of hours.
Here's how the idea works: customers sign up for an assembly session with a preset menu. They come in and make their way around assembly stations, measuring prepared...