Combine the flour, bicarbonate of soda, baking powder and salt in a bowl. Whisk and set aside.
Using an electric mixer fitted with a paddle attachment, cream the butter, sugars, egg and vanilla.
Add all the dry ingredients to the butter and mix until combined. Add in the chocolate chips and freeze dried raspberries and mix until just combined – do not overmix as it will lead to a tough cookie.
Refrigerate your cookies for 12-36 hours before baking. The longer you refrigerate them, the more flavour development will occur, the less the cookies will spread and the better the texture will be.
When you’re ready to bake your cookies, preheat the oven to 180? fan-forced. Line two baking trays with baking paper. Place six golf-ball sized rounds of dough on each tray, using about 50 grams of dough per cookie. The cookies will spread, so give them space to do their thing.