Make the oat flour but adding 1 cup oats to the base of a blender and mix until a flour forms. Add the rest of the ingredients to a blender and blend until smooth, the batter should be thin and runny. If for some reason it is not or it starts to thicken as it sits, have another 1/4 cup of milk on hand to thin.
Heat crepe pan or skillet. Spray pan with a little cooking spray or vegan butter to lightly grease.
Pour about 1/4 cup of batter to pan and swirl immediately. Using an offset spatula, spread batter toward outside to create a thin layer. Once edges start to brown, carefully flip crepe. Allow to cook on other side for about 1 minute.
Transfer to a plate and repeat the process with the rest of the batter. Stack the warm crepes so they soften after cooking.