Preheat your waffle iron. Preheat your oven to 180 degrees or it's lowest setting. This is how you'll keep the waffles hot while you make all of them. Mix together the flour, cinnamon, and flax in a large bowl and set aside.

In another bowl mix the eggs, milk, greek yogurt, vanilla, maple syrup and melted butter.

Slowly add the dry ingredients to the wet ingredients. Do not over mix.

Brush a little melted butter onto your waffle iron and cook according to your tastes. My waffle iron is Food Network brand and I love it. It has a green light for when it's ready and the settings range from crispy to soft. Just remove the waffles when it beeps. You'll need to read the instructions on your particular waffle maker, but mine took about 10 minutes.