Ingredients
Method
Preheat oven to 160°C. Grease a 24cm-angel food cake tin. Line the base, side and middle with baking paper. Combine plain flour, brown sugar and grated butter in a bowl and rub using fingertips to form a crumble. Set aside.
Put softened butter and caster sugar in the bowl of an electric mixer and beat with paddle attachment on medium speed for 5 minutes or until light and fluffy. Beat in eggs, 1 at a time, beating well after each addition. Fold in vanilla, coffee, sour cream and hazelnut meal. Sift in self-raising flour and baking powder, then stir until smooth.
Spread 1/2 the batter into prepared tin. Top with 1/2 the crumble and 1/2 cup of the chocolate chips. Finish with remaining batter, crumble and chocolate chips. Bake for 50 minutes or until a skewer can be inserted and removed cleanly. Serve with double cream.