Prepare waffle mix. Prepare cinnamon-sugar blend by combining cinnamon and sugar and mixing together. Spray waffle iron with non-stick spray. Place a scoop of waffle mix into heated waffle iron and sprinkle a 1-2 teaspoons into waffle mixture as it is cooking. Remove cooked waffles from iron. Place cinnamon-sugar mixture in deep bowl. Brush warm waffles with butter and coat waffles in cinnamon-sugar until fully coated. Cut waffles length-wise into sticks.