Blitz the Maltesers up to a fine crumb. Tip them into a bowl then add the melted butter and mix until it’s well combined. It will look dry at first but keep mixing!
Pat it down into the base of a 22cm springform tin, then pop it into the fridge whilst you get the filling ready.
Melt the milk chocolate and dark chocolate in a heatproof bowl over a pan of simmering water. Set it aside to cool slightly.
In a separate mixing bowl add the cream cheese, double cream, icing sugar, malt powder and the melted chocolate. Use an electric whisk to beat it for a few minutes until it’s well combined.
Spoon it over the Malteser base, then smooth it over. Pop it into the fridge to set for at least 6 hours but ideally overnight.
Decorate with whipped cream and sprinkle over more Maltesers, then enjoy.