1 c. sugar
3 1/2 tbsp. cornstarch
1 tbsp. lemon rind, grated
1/2 c. fresh lemon juice
3 egg yolks, slightly beaten
1 c. milk
1/4 c. butter
1 c. cultured sour cream
1 baked 9" pie shell
1 c. heavy cream, whipped for topping

You can use a carton of Cool Whip instead. Lemon twists for garnish if desired. Combine sugar, cornstarch, lemon rind, juice, egg yolks and milk in 2 quart glass bowl. Cook in microwave, stirring often until mixture thickens. Stir in sour cream and pour filling into pie shell. Cover with whipped cream or Cool Whip. Garnish with lemons if desired. Store in refrigerator. Serve chilled.