Preheat your waffle maker. If desired, preheat the oven to 200 degrees F to keep batches of waffles warm.
Place the applesauce, milk, butter, eggs, maple syrup, and vanilla extract in a blender. Sprinkle in the flour, baking powder, cinnamon, and kosher salt. Blend just until combined, pausing the blender to scrape down the sides as needed.
Cook the batter according to your waffle maker’s instructions. If desired, place the waffles on a baking sheet and keep warm in the oven. Enjoy immediately with your favorite waffle toppings.
See blog post above for step-by-steps to freeze and reheat waffles.
You can also refrigerate the waffles for up to 1 day.