1In medium bowl, stir Bisquick mix, sugar, baking powder and 1/2 teaspoon cinnamon. Add buttermilk and egg, stirring with fork or whisk until blended. Gently fold in chopped peaches.
2Heat griddle or skillet over medium-high heat (375°F). Grease griddle with vegetable oil if necessary (or spray with cooking spray before heating). For each pancake, pour 1/4 cup batter onto hot griddle. Cook until edges are dry and bubbles form on top. Turn and cook other sides until golden brown.
3Serve pancakes with whipped cream and sliced peaches; sprinkle with additional cinnamon.