Traditional Cookies

Line a baking tray with baking paper and preheat the oven to gas mark 5 or 190 degrees;
mix together the butter and both sugars until creamy;
add the vanilla extract and the egg and beat;
sift in the flour and baking powder and continue to beat until smooth;
add in the chocolate chips or chunks and stir them in;
use a teaspoon to pick up some of the mixture and roll it into a ball between you hands, for traditional cookies, keep the ball small; and
bake for around 10 minutes and then leave to cool.

https://www.emmarenata.com/2020/04/traditional-chocolate-chip-cookie-recipe.html