But that’s not the *only* bun you can use to house a burger. Potato buns are another popular choice, as well as brioche and sesame seed buns. They all share a few characteristics, like a soft ...

Pierce the sweet potatoes all over with a fork ... about 1 1/2 inches thick. Arrange the buns, cut side up, in the prepared cake pans. Cover the pans with plastic wrap, and let the buns rise ...