How to recreate Millie’s Cookies personalised giant biscuit at home

Cookie ingredients:   • 350g plain flour • 1tsp baking soda • 1tsp salt • 2 eggs • 1tsp vanilla • 235g softened unsalted butter • 340g chocolate chips • 110g granulated sugar • 225g light brown sugar     Buttercream ingredients: • 100g butter • 150g icing sugar • 25g cocoa powder    Equipment: • Stand mixer, … Read more