MIX cookie crumbs, sugar and margarine until well blended. Press firmly onto bottom of 9-inch springform pan. Refrigerate 15 min. or until firm. Spread evenly with jam.
MICROWAVE white chocolate, 1/4 cup of the cream and the liqueur in large microwaveable bowl on HIGH 2 min.; stir. Microwave 1 min. or until chocolate is almost melted, stirring after 30 sec. Stir until chocolate is completely melted. Cool 30 min. or until room temperature, stirring occasionally.
BEAT remaining 1-1/2 cups cream in large chilled bowl with electric mixer on medium speed until soft peaks form. (Do not overbeat.) Gently stir 1/3 of the whipped cream into white chocolate mixture until well blended. Gently stir in remaining whipped cream. Spread over jam layer. Refrigerate 6 hours or overnight. Run small knife or spatula around side of pan to loosen cake; remove side of pan. Store leftover cake in refrigerator.