Mix the dry ingredients together : oatmeal, flour, raisins, baking soda and salt.

Cream the butter with sugar, until light and fluffy. Add in egg, mix well. Then add in dry ingredients, mix until well-combined.

Take out about a tablespoon batter, roll it and press it. Place on lined baking sheet.

Pop in preheated oven at 180C, bake for 12-15 minutes. Let it cool on baking sheet for 15 minutes. Enjoy!