Add the oats, egg and 100ml of milk to the blender and blitz until smooth.
To make the crepes by hand, use oat flour and whisk together with 100ml milk and 1 egg.
The mixture should be the consistency of single cream. If necessary use a little more milk to thin the mixture. You might need to add a little more milk as you move on to cook the next crepe.
Heat a non stick pan over a medium heat. When the pan is hot, add a small drizzle of oil and tip across the pan.
Tip about a quarter of the crepe mixture into the hot pan and immediately swirl around to cover the pan. If necessary you can spread the mixture lightly with the back of the spoon.
Cook for about 2 minutes until the top of the crepe is set and the bottom comes away easily from the pan.
Flip the pancakes with a spatula (or toss it if you are feeling brave) and cook on the other side for about a minute. The crepes should be lightly golden.
Stack the crepes on a warm plate and repeat with the remaining mixture.
Notes
Dairy free oat flour crepes can be made with oat milk if necessary.