Frozen Chocolate Mousse
["1 pack graham crackers (finely rolled)", "1/3 c. margarine, melted", "6 (1 oz.) sq. semi-sweet chocolates, melted", "3 eggs, separated (room temperature)", "1 tsp. vanilla", "1/2 c. pecans, chopped", "1 1/2 c. heavy cream, whipped", "1/3 c. sugar"]
["Combine graham cracker and margarine; press into bottom of spring-form pan.", "Bake at 350\u00b0 for 10 minutes; cool.", "Beat together chocolate, egg, and vanilla; stir in pecans.", "Reserve 1 cup whipped cream; blend remaining into chocolate mixture.", "Beat egg whites until foamy; gradually beat in sugar until stiff.", "Fold into chocolate mixture; pour into prepared crust.", "Garnish with reserved whipped cream.", "Cover; freeze 6 hours or overnight."]
["crackers", "margarine", "semi-sweet chocolates", "eggs", "vanilla", "pecans", "heavy cream", "sugar"]