Sift the flour and baking powder in a large mixing bowl, add the egg, peanut butter, peanuts and salt and mix together.
In an electric mixer or with a hand mixer beat the butter, vanilla essence and sugars until creamy and add this to the flour mixture, and mix until incorporated.
NOW – again – like so many times before – I am thinking that it is impossible to do anything with this messy dough as it was very sticky and wet. I was tempted to add more flour, but after a rest in the fridge it rolled into beautiful delicate little balls of dough.
After resting in the fridge for an hour or so, roll into desired balls and arrange on a greased baking sheet, press down lightly with a fork or fingers.
Bake for 15 minutes at 180 degrees Celsius, checking that it doesn’t go too dark closer to the end.