In 1-quart saucepan, cook caramels and 1/4 cup of the whipping cream over low heat, stirring frequently, until melted and smooth. In medium bowl, place cashews. Pour 1/4 cup caramel mixture over cashews; toss until completely coated. Set aside. Cool remaining caramel mixture 5 minutes. Pour over baked tart shell; refrigerate 30 minutes.