Mix the dry ingredients: wheat flour, oat flour, whole rolled oats, cinnamon, vanilla and salt.
Soak the raisins in boiling water, drain, and pat dry on a paper towel. Chop the chocolate.
Beat the butter with the sugar until pale and the sugar has dissolved, add the egg, and beat a little more.
Add the butter mixture to the dry ingredients along with the chocolate and raisins, and mix by hand. The dough will be sticky - that's how it should be.
Grease your hands with oil, roll balls about one and a half walnuts in size, flatten each slightly, and place on parchment.
Bake for 15-20 minutes at 180°C in a preheated oven.