Confetti Cookies185g butter
280g plain flour
100g 100s + 1000s
Beat butter, sugar and vanilla on speed 4 for 30 seconds.
Add egg, beat on speed 4 for 10 seconds.
Add flour and 100s + 1000s, mix on interval speed for 30 seconds. Open lid, scrape down sides of the bowl with spatula and mix another 15 seconds on interval speed, using the spatula to help incorporate.
Roll mixture into a 30cm long log. Roll in plastic wrap.
Place in the fridge for 2 hours to chill. (Alternatively, place in the freezer for 20 minutes.)
Slice into 1cm thick slices. Place on baking tray lined with baking paper.
Bake in moderate oven for 12 minutes. Rest on tray before removing to wire rack to cool completely.