In a large mixing bowl, lightly whisk the eggs. Add milk, maple syrup, olive oil, vanilla, baking powder and salt. Whisk until well combined.
Add whole wheat flour and mix gently with a spatula just until combined. Do not overmix.
Preheat waffle maker until it's hot and spray with cooking spray.
Make waffles according to your waffle maker's instructions. Amount of batter depends on the size of your waffle maker. I used about ⅓ cup batter per each waffle. For crispier waffles, I also cook a bit past the green Ready indicator.
