Ingredients

250 g plain flour
2g baking soda
3g salt
170g butter, melted
220g brown sugar
100g caster sugar
15ml vanilla extract
1egg
1egg yolk
335g chocolate chips

Directions

1. Preheat the oven to 325F/165C/Gas Mark 3.
2. Grease baking tray or line with greaseproof paper.
3. In a bowl sieve the flour, baking soda and salt together.
4. In anoither bowl, cream together the melted butter, brown sugar and caster sugar until light and fluffy.
5. Beat in the vanilla, egg, and egg yolk until light and creamy.
6. Mix in the dry ingredients until just blended.
7. Stir in the chocolate chips.
8. Place dessert spoons full of cookie dough onto the baking tray, spacing them about 6cm apart.
9. Bake for 15 to 20 minutes in the preheated oven, or until the edges are lightly browned.
10. Cool on the baking sheets for a few minutes then transfer to wire racks to finish cooling.