INGREDIENTS
1 cup
8oz/240g butter, melted and cooled
2 tbsp
vegetable oil
1 1/4 cups
(9oz/260g) white sugar
1 cup
(7oz/200g) packed light brown sugar
4
(2oz/57g each) large eggs, (at room temperature)
1 tbsp
pure vanilla extract
3/4 tsp
salt
1 cup
(3.5oz/130g) all purpose flour
1 cup
(3.5oz/100g) good quality, unsweetened cocoa powder
7 oz
roughly chopped chocolate or large chocolate chips