Oreo Strawberry Mousse Cake

Oreo Strawberry Mousse Cake 29 Oreo chocolate sandwich cookies, divided 2 tablespoons margarine or butter, melted 2 packages (4-serving size) strawberry flavor gelatin powder 1 cup boiling water 1 cup cold water 2 cups strawberries, pureed 1 1/2 cup whipping cream, whipped, divided Halve 3 cookies; set aside. Finely crush 12 cookies; mix with margarine. Press crumb mixture on bottom of 9-inch springform pan; stand remaining cookies around edge of pan. Dissolve gelatin in boiling water in large bowl; stir in cold water and strawberry puree. Refrigerate until slightly thickened. Beat gelatin with electric mixer on high speed until foamy, about 2 minutes. Fold in 2 cups whipped cream. If necessary, refrigerate until mixture mounds. Spoon into prepared crust. Refrigerate 4 hours or until firm. Remove side of pan; garnish with remaining whipped cream, halved cookies, strawberries and mint sprig, if desired.