Chocolate Brownies

• 110g butter
• 110g caster sugar
• 65 grams brown sugar
• 1 egg
• 1/2 tsp vanilla extract
• 275g plain flour
• 1/2 tsp baking powder
• 100g milk chocolate chips
• 2 packs oreos

For the brownie:

• 115g Dark chocolate
• 225g butter
• 350g caster sugar
• 4 eggs
• 50g plain flour
• 50g cocoa powder
• A few drops of vanilla extract

First make the cookie base by creaming together the butter and sugars until soft, then add the egg and mix well. Add the flour, baking powder and chocolate chips and fold in well.
Spread the cookie dough along the bottom of a grease proof paper covered brownie tin and top with oreos. Then to make the brownie mixture, melt the chocolate and butter in a metal bowl over hot water (bain marie). Whisk the sugar and eggs together in a large bowl until they have trebled in volume.  Sift the flour and cocoa powder in to the mixture, then pour in the melted chocolate and butter mixture and mix together.
Pour the brownie mixture over the cookies, pop in the oven for 40 minutes at 180 degrees.