Baked Alaska Pie

1 9" unbaked pie shell
1 pint each chocolate, pistachio and strawberry ice cream
3 egg whites
1/4 tsp. cream of tartar
6 tbsp. sugar
1/2 tsp. vanilla

Quickly pack scoops of ice cream, alternating flavors, in pie shell.
Freeze until firm.
Heat oven to 500F.
Beat egg whites and cream of tartar until foamy.
Beat in sugar, 1 tbsp. at a time; continue beating until stiff and glossy.
Do not underbeat.
Beat in vanilla.
Working quickly, heap meringue onto ice cream; spread over ice cream, carefully sealing to edge of crust.
Bake 3 to 5 minutes or until top is light brown.
Serve immediately.