Crush the biscuits and mix with melted butter and cinnamon. Press into the base of a springform pan and bake for 10 minutes at 180°C. Cool while preparing the filling.
Notes
FillingIngredients:500g cream cheese, softened250g sour cream¾ cup (165g) sugar4 eggs125g blackberries1 tbsp cornflour mixed with water1 tsp vanilla extractMethod: Blend cream cheese, sour cream, and sugar until smooth. Add the eggs one at a time, followed by the cornflour mixture and vanilla. Pour into the prepared base. Swirl mashed blackberries into the filling and bake at 220°C for 10 minutes, then reduce heat to 110°C for 35 minutes. Cool in the oven to prevent cracking.ToppingIngredients:100g flour50g butter50g brown sugar2 tbsp rolled oats125g blackberries2 tbsp caster sugarMethod: Cook blackberries with sugar and water to make a syrup. Rub butter into the flour mixture, add oats, and bake until golden. Sprinkle crumble over the cheesecake along with the syrup.