1.Preheat the oven to 180C.2. Place butter cut in cubes into mixing bowl and melt for 2-3 min/50 degree/speed 1.3. Add the biscuits and blitz for 10 sec/ speed 8 (You may need to repeat this if you want).4. Transfer to a Springform and press mixture over the base and sides of pan.5. Bake for 10 min until is lightly browned. Remove from the oven and allow to cool down.6. Place the dark chocolate into mixing bowl and grate 10 seconds/ speed 8. Scrape down sides of mixing bowl with spatula.7. Add cream and heat 2 minutes/ 50degree/ speed 3. 8. Pour into prepared pan with biscuit, and put in the freezer for 2 hours or in the frigde until is a firm consistency.9. Decorate with berries as you like