Add the cottage cheese, egg, vanilla extract, butter, and milk to a blender and blend smooth.
Combine the flour, baking powder, and salt in a large bowl.
Add the blended cottage cheese mixture and stir gently to combine.
Warm the waffle iron. Coat with nonstick spray.
Place ½ cup batter in each center of the waffle iron. Close the waffle iron and cook until done.
Transfer to a plate and serve, or to a baking sheet in a 225 degree F oven to keep warm until the batch is done.
Repeat to finish the batch. Serve waffles with desired toppings.
