Multigrain Waffles

Name: Multigrain Waffles
Ingredients: 1 1/2 cups whole-wheat pastry flour; 1/4 cup cornmeal; 1/4 cup old-fashioned rolled oats; 1 tablespoon wheat germ, optional; 2 teaspoons baking powder; 1 teaspoon kosher salt; 1/2 teaspoon baking soda; 1 1/2 cups buttermilk; 3 tablespoons grapeseed or vegetable oil, plus more for brushing waffle iron; 3 tablespoons packed light brown sugar; 2 large eggs; Plain low-fat yogurt and your favorite fruit preserves, for topping, optional