Potato, Sweet Potato, and Onion Latkes

Grate potatoes and onion using the largest holes of a four-sided grater. Combine in a small bowl; add egg, flour, salt, and pepper, and stir well to combine.

Heat 1 tablespoon oil in a large nonstick skillet over medium-high heat. Drop batter by heaping tablespoonfuls into the pan, and cook until golden brown around the edges, about 3 minutes. Turn latkes over, press lightly with a spatula, and cook about 3 minutes more. Continue cooking latkes in batches until batter is used up. Serve with applesauce or sour cream.