For a twist on traditional sushi, try this sweet potato tempura roll. Start by slicing sweet potatoes into thin strips and coating them in tempura batter. Fry them until crispy and golden brown. Meanwhile, blend together a mixture of cream cheese, scallions, and mayonnaise in a food processor. Spread the cream cheese mixture onto a sheet of nori, add the sweet potato tempura, and roll it up. Slice and enjoy!