1In medium bowl, stir Bisquick mix, buttermilk, sweet potatoes, eggs, cinnamon and sugar with wire whisk or fork until blended.
2Brush griddle or nonstick skillet with vegetable oil; heat griddle to 350°F, or heat skillet over medium-low heat.
3For each pancake, pour slightly less than 1/4 cup batter onto hot griddle. Cook until edges are dry. Turn; cook other sides until golden brown. Serve with syrup.