Set aside one Candy Melts candy disk. Chop remaining candy into small chunks.
Line the sides and bottom of a 9 in. springform pan with ladyfingers. Brush evenly with a thin coating of coffee. Spread softened coffee ice cream over ladyfingers in a smooth layer. Sprinkle with chopped Candy Melts candy. Freeze 30 minutes.
In large bowl, beat vanilla ice cream and mascarpone cheese until smooth. Spread over chopped Candy Melts candy. Finely grate reserved Candy Melt candy over top of ice cream. Freeze until set, at least two hours.