Thick Chocolate Chip Cookies

Name: Thick Chocolate Chip Cookies
Prep time: 1 h 20 min
Cook time: 20 min
Total time: 1 h 40 min
Yield: 6
Ingredients: 115g salted butter, softened; 80g light brown soft sugar; 80g caster sugar; 1 large egg; 325g plain flour; ½ tsp bicarbonate of soda; 150g dark chocolate chunks; 150g milk choc chunks