Chocolate brownies

This one's from the Guardian...

Jane Asher's American brownies

Makes 10

200ml vegetable oil
150g golden granulated sugar
100g dark brown soft sugar
2 tsps vanilla extract
3 medium eggs
60g cocoa powder
100g self-raising flour
¼ tsp salt
¼ tsp sodium bicarbonate
100g chopped hazelnuts or walnuts (optional)

Preheat the oven to 180C (165C fan-assisted) 350F, gas mark 4. Prepare a 20 x 25 cm (or 23 cm square) baking tin. Put all the ingredients into a large mixing bowl and beat well together. Spoon the mixture into the prepared tin and bake for 25-30 minutes, depending on how chewy you like your brownies. Let the brownies cool in the tin, then turn out and decorate.

For my latest batch I replaced some of the hazelnuts with chopped up good-quality dark chocolate and some raisins.