Oven preheated to 180C and line 2 biscuit trays with silicone paper.
In a food processor add butter, sugar, vanilla and peanut butter, whiz until fully combined.
Add the egg and whiz until light and fluffy (a few minutes).
Add flours and bicarb and pulse until mixture comes together in a ball.
Roll teaspoon of dough into rounds and roll in the raw sugar.
Place on lined trays 3 cm apart.
Bake for 15-20 minutes. Cool on trays.
Keep in an airtight container for 1 week.