In a mixing bowl add eggs and vanilla, beat on med-low for 2 minutes (wet ingredients).
To the wet ingredients add the room temperature melted butter, vegetable oil, and milk. Beat for an additional 2 minutes.
In a separate bowl, combine the dry ingredients: flour, baking powder, salt, and cinnamon. Whisk the ingredients together to combine.
Keeping the mixer on low, gradually add the dry ingredient mixture to the wet ingredient mixture (one cup at a time).
Allow the batter to sit for 2-3 minutes.
Pour the batter into the waffle iron: 1 cup to 1 1/4 cups per waffle. If necessary, before adding the batter use a cooking spray to keep the waffles from sticking.
Turn the iron over. Set the timer to 3-4 minutes.
Notes
(Optional) Allow the waffles to cool slightly on a wire cooling rack to keep them as crispy as possible. Nobody likes soggy waffles. Serve with warm syrup or fruit.