Chocolate Mousse Cake
["3 c. crushed Oreo cookies", "1 lb. semi-sweet chocolate chips", "2 whole eggs", "4 egg yolks", "2 c. whipping cream", "6 Tbsp. powdered sugar", "4 egg whites (room temperature)"]
["Line bottom and sides of a 9 or 10-inch spring-form pan with cookie crumbs. Refrigerate."]
["cookies", "semi-sweet chocolate chips", "eggs", "egg yolks", "whipping cream", "powdered sugar", "egg whites"]