You can substitute Whole wheat flour for All purpose flour.
You can add green chilies and ½ cup of grated carrot in the mix too.
If you have the batter thick, the crepe will not cook well in the middle, so make sure to have the batter a little watery.
Black Bean flour is nutty and requires less salt, so be cautious.
It's also an excellent ingredient for gluten-free baking. High in dietary fiber and a good source of iron, magnesium and phosphorus, this nutritious flour has a rich, earthy flavor. Black beans are low sodium, low fat and a great source of protein. Because of their iron and protein content, black beans are often recommended as an important part to a healthy vegetarian diet.