Whisk together the flour, sugar, baking powder, and salt in a medium-sized bowl. In a small bowl, whisk together the egg, oil, mascarpone and milk. Add the wet ingredients to the dry and stir to combine. Fold in the cherries. Follow the instructions included with your waffle iron to complete waffles. For most large, Belgian-style waffle irons you would use 1 cup of batter for each waffle.