Make sure the pistachio spread is portioned and frozen
Add the butter and sugar to a bowl and beat until creamy
Add in the egg and vanilla and beat again.
Add in the plain flour, baking powder, bicarbonate of soda, and salt and beat until a cookie dough is formed!
Add in the white chocolate chips and chopped pistachios and beat until distributed well
Weigh your cookies out into ten cookie dough balls - they're about 90-100g each
Once they're rolled into balls, press the dough in the palm of your hand, and add a lump of frozen pistachio spread and wrap the cookie dough around it.
Chill the cookies in the freezer for at least 30 minutes, or in the fridge for an hour or so!
Whilst the cookie dough is chilling, preheat your oven to 200ºc/180ºc fan
Take the cookies out of the freezer/fridge and put onto a lined baking tray. I put five cookies per tray!
Bake the cookies in the oven for 11-13 minutes.
Let the cookies cool on the trays for at least 30 minutes, as they will continue to bake whilst cooling!
Once cooled, spoon on a dollop of white chocolate and sprinkle with chopped pistachios if you want to decorate
Notes
These cookies will last for 3-4+ days at room temperature
You can freeze the baked cookies for 3+ months
The raw cookie dough will last 48 hours in the fridge before baking
The raw cookie dough can also freeze for 3+ months. You just need to add 1-2 minutes baking time to bake from frozen