Grease an 8 inch round spring form pan and line with baking paper.
In a food processor, process biscuits until fine crumbs.
Add the melted butter and malt powder and process until combined.
Press the mixture evenly over the bottom of the pan.
FILLING
Roughly chop 200g of tim tams.
In a small heatproof bowl sprinkle the gelatine over the water and stand the bowl over a saucepan of boiling water and stir until the gelatine has melted. Allow to cool for a few minutes.
With an electric mixer, beat the cream cheese, vanilla and sugar until smooth.
Beat in the cream until combined followed by the white chocolate and gelatine mixture.
Stir through the chopped tim tams.
Spoon the filling over the base and smooth the top.
Refrigerate for at least 3 hours or overnight to set.
Decorate the top of the cheesecake with the remaining 100g of tim tams.
Nutritional information is an estimate and provided as a courtesy. The values may vary according to the ingredients and tools that are used. Please use your preferred nutritional calculator for more detailed information.