Key Lime Pie

Key Lime Pie
Southern Living (not sure which book - the recipe was given to me from a friend)
Yield: 1 (9 inch) pie

Ingredients
1 1/4 cups graham crackers crumbs
1/4 cup firmly packed light brown sugar
1/3 cup butter or margarine, melted
2 (14 oz) cans sweetened condensed milk
1 cup fresh key lime juice
2 egg whites
1/4 tsp cream of tarter
2 Tbsp sugar
Garnish: lime slices

Directions
-Combine first 3 ingredients. Press crumb mixture into a 9-inch pie plate.
-Bake at 350 degrees for 10 minutes; cool
-Stir together condensed milk and lime juice until blended. Pour into crust.
-Beat eggs whites and cream of tartar at high speed with an electric mixer just until foamy. Add sugar, 1 tablespoon at a time, beating until soft peaks form and sugar dissolves (2 to 4 minutes).
-Spread meringue over filling.
-Bake at 325 for 25 to 28 minutes. Chill 8 hours. Garnish, if desired.