1.Process biscuits until fine; add butter, process until combined. Press mixture evenly over base and sides of a 11cm x 34cm (base measurement) rectangular fluted loose-based flan tin. Place tin on a tray and freeze while you make the filling.
2.Meanwhile, sprinkle gelatine over the water in small heatproof jug; stand jug in small saucepan of simmering water. Stir until gelatine dissolves; cool 5 minutes.
3.Beat cream cheese and caster sugar in small bowl with electric mixer until smooth. Add coconut cream, rind and juice; beat until smooth. Stir in gelatine mixture.
4.Pour mixture into crumb crust. Cover; refrigerate about 3 hours or until set.
If you have difficulty finding coconut macaroons you can use 100g butternut biscuits. Reduce the butter quantity in the recipe by half as these biscuits are quite high in butter.Note