Key Lime Pie
["1 1/4 c. graham cracker crumbs", "1/4 c. light brown sugar", "1/3 c. butter, melted", "2 (14 oz.) cans sweetened condensed milk", "1 c. fresh Key lime juice", "2 egg whites", "1/4 tsp. cream of tartar", "2 Tbsp. sugar", "lime slices (optional)"]
["Combine graham cracker crumbs, brown sugar and butter. Press into a 9-inch pie plate. Bake at 350\u00b0 for 10 minutes. Let cool."]
["graham cracker crumbs", "light brown sugar", "butter", "condensed milk", "fresh Key lime juice", "egg whites", "cream of tartar", "sugar", "lime"]