Honey and blackberry swirl cheesecake

Name: Honey and blackberry swirl cheesecake
Prep time: 15 min
Cook time: 55 min
Total time: 1 h 10 min
Cuisine: European
Ingredients: 250g frozen blackberries; 20.00 gm caster sugar; 250g pkt Ginger Nut biscuits; 100g Butternut Snap Cookies; 125g butter, melted; 2 x 250g pkts cream cheese, at room temperature; 300g ctn sour cream; 117.98 gm creamed honey; 70g (1/3 cup) caster sugar, extra; 3 eggs; Double cream, to serve