Ingredients
For the cookies
- 150g/5½oz caster sugar
- 120g/4oz light soft brown sugar
- 50g/1¾oz crunchy peanut butter
- 175g/6oz butter, softened
- 1 tsp vanilla extract
- 2 large free-range eggs
- 200g/7oz plain flour
- 1 tsp bicarbonate of soda
- 250g/9oz rolled oats
For the filling
- 150g/5½oz icing sugar
- 250g/8oz crunchy peanut butter
- 100g/3½oz butter, softened
Method
-
Preheat the oven to 200C/180C Fan/Gas 4 and line two large baking trays with baking paper.
-
Using an electric whisk, cream the sugars, peanut butter, butter and vanilla extract until pale and smooth. Add the eggs, one by one, mixing well after each addition so that the mix doesn’t curdle.
-
Whisk in the flour and bicarbonate of soda, then using a spatula or wooden spoon, fold through the oats until combined.
-
Place 40 heaped tablespoons of the mixture onto the trays and bake for 15 minutes or until golden brown. Allow to cool on the trays slightly before transferring to a wire rack to cool completely.
-
Sift the icing sugar into a large bowl and beat in the peanut butter and butter. Add a heaped tablespoon of the filling to the flat underside of 20 of the cookies and sandwich together with the remaining cookies.