How to Make Mashed Sweet Potato Balls. Make mashed sweet potato balls in the air-fryer, oven or cast iron skillet. Mashed Sweet Potato Balls Ingredients and Directions. Ingredients 4 large sweet potatoes 2 large chicken eggs 1 cup wheat flour ¼ cup brown sugar ¼ cup white sugar 1/2 teaspoon orange zest 1 teaspoon ground allspice Salt to taste 1 cup bread crumbs Oil for frying Directions On medium-high heat, heat 3 inches of vegetable oil in a large cast iron skillet. Wash, peel and boil sweet potatoes then mash well. Add flour, one egg, sugars, spice, zest and salt to make the sweet potato dough to a rolling consistency. Evenly divide sweet potato dough into 12 round balls with your hands, then dredge first in egg and then in panko. Repeat. Fry sweet potato balls a few at a time until golden brown about 2-1/2 to 3 minutes on each side. Drain on a paper towel. Serve with curry. Don’t want to fry in oil? You can also bake mashed sweet potato balls at 400 degrees until gol...