In a bowl, combine the flour, cinnamon, baking soda, baking powder, salt, and nutmeg. Stir these together to combine. Set aside for now.
Break the eggs into your mixing bowl. Add in the buttermilk, vanilla, & brown sugar. Beat those together until the eggs are completely mixed into the buttermilk.
Mix the dry ingredients into your milk mixture until smooth. Add in the apple and fold them into the batter.
Cook the waffle batter according to your waffle maker instructions.