The perfect cookie that's crisp round the edges and chewy in the middle
In another larger bowl (either with a hand whisk or stand mixer), whisk the butter, light brown and granulated sugar until light and fluffy, then add the egg and yolk, and drizzle of mild olive oil and whisk again for another minute
Add the dry ingredients and with a spatula gently fold until just combined. Add your chocolate chips or crushed pistachios
Preheat the oven to 175°C (345°F) and line the baking tray with parchment paper
Spoon on a tablespoon of mixture about 2 inches apart on the baking tray and transfer to the preheated oven
After around 7 mins of baking, take out the tray and bash it firmly on the counter
When the cookies begin to brown around the edges (after approx 11 minutes in total), bash them again on the counter. Leave to cool for a few minutes then transfer to a wired rack to finish cooling