Chocolate Peanut Cheesecake

This is my version of the Chocolate Peanut Butter Cheesecake by Nigella Lawson. I made some changes in the base because I wanted to find a balance between chocolate and peanuts. Therefore I didn't put peanuts, only digestive biscuits, a tablespoon of granulated sugar, butter and stead of chocolate I used 15 g of cocoa
http://www.nigella.com/recipes/view/CHOCOLATE-PEANUT-BUTTER-CHEESECAKE-5309