Frosty Lemon Supreme(Healthful Eating)  
["1/2 c. crushed graham cracker crumbs", "2 egg whites", "1/3 c. very cold water", "1/3 c. nonfat dry milk", "1 egg yolk", "1 tsp. grated lemon zest", "1/4 c. fresh lemon juice", "1/4 c. granulated sugar"]
["Line a 9-inch pie plate with 1/4 cup of the graham cracker crumbs.", "Beat egg whites, water and milk to stiff peaks.", "Add egg yolks, lemon zest and lemon juice; beat 1 minute, gradually adding sugar.", "Spoon into pie plate.", "Sprinkle remaining crumbs over top. Freeze at least 2 hours."]
["graham cracker crumbs", "egg whites", "very cold water", "nonfat dry milk", "egg yolk", "lemon zest", "lemon juice", "granulated sugar"]