No Bake Lime Mousse Torte

Combine cookie crumbs and sugar in a large bowl. Pour in melted butter, and mix thoroughly. Press into the bottom, and 1-inch up the sides of a 10-in springform pan. Sprinkle the gelatin over the lime juice in a small bowl, and set aside to soften. Bring 1/2 cup of whipping cream to a simmer in a heavy pan. Remove from heat, and stir in the white chocolate until melted. Mix the gelatin into the chocolate until well combined; set aside to cool. Beat remaining 2 cups of cream to stiff peaks in a large bowl, and set aside. Beat the cream cheese with the sugar with an electric mixer until well blended. Slowly blend chocolate mixture into cream cheese, then mix in lime zest. Fold the whipped cream into the cream cheese mixture, and pour into prepared crust. Cover, and refrigerate overnight.