Instructions
HEAT oven to 375ºF. Prick pie crust with fork. Bake 15 minutes. Remove from oven. Reduce oven temperature to 325ºF.
BEAT sweetened condensed milk, pineapple juice concentrate and egg yolks in large bowl until well blended. Stir in 3/4 cup crushed pineapple. Pour into prepared pie crust.
BAKE 25 minutes or until center is set. Top with sour cream. Bake an additional 5 minutes. Cool.
COMBINE sugar and cornstarch in small saucepan. Gradually add reserved 1/2 cup pineapple juice; add remaining pineapple. Cook and stir over low heat until thickened. Cool. Spread over pie. Chill thoroughly. Serve with whipped topping, if desired.