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. (I use the 4 out of 5 setting on my waffle iron.) Coat with nonstick spray.
Place 1/2 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.
Notes
To store, let waffles cool on a wire rack and store in an airtight container in the fridge for up to 3 days. Reheat in the microwave for 15-30 seconds to serve. To freeze, store cooled waffles in a zip top storage bag, with as much air removed as possible, for up to 3 months. Warm on a plate in the microwave for 30-60 seconds, turning over halfway through, or in the toaster oven.
I prefer to use cottage cheese with either 2% or 4% milk fat.
Add 1 teaspoon cinnamon to the batter for additional flavor.
Gluten-free: Use a 1:1 style of gluten-free baking mix or use buckwheat flour, adding up to an additional 1/4 cup milk as needed to make a batter that's easy to stir and dollop.