MIX base cake and butter; press firmly onto bottoms of 5 (9-inch) springform pans (or 1 pan for trial recipe). Freeze 30 minutes.
SPREAD 1 quart of the ice cream over each crust; top with 1 cup of the OREO Pieces. Cover with layers of remaining ice cream and OREO Pieces. Freeze several hours or overnight until firm.
CUT into wedges to serve. Garnish with whipped topping and maraschino cherries, if desired.