Whole Wheat Hazelnut Waffles with Cinnamon Sautéed Apples

Name: Whole Wheat Hazelnut Waffles with Cinnamon Sautéed Apples
Ingredients: 2 tablespoons butter; 4 cups apples peeled and chopped with the core removed; ¼ cup sugar; 1 heaping teaspoon ground cinnamon; For the waffles:; 1 cup all-purpose flour; 1 ½ cups whole wheat pastry flour; 1 heaping cup hazelnut flour; 1 teaspoon baking soda; 1 1/2 teaspoons baking powder; 1 teaspoon salt; 1 teaspoon cinnamon; 3 tablespoons light brown sugar; 3 whole eggs beaten; 1 teaspoon vanilla; ½ stick 4 tablespoons unsalted butter, melted; 2 cups buttermilk room temperature; non-stick baking spray for waffle baker; maple syrup