Lemon Delight Pie

1 large pkg Jello lemon pie filling

1 egg
½ cup sugar
2¼ cups water
1 envelope Dream Whip dessert topping mix
½ cup cold milk
½ tsp vanilla
2 Tbsp sugar

Combine pie filling, ½ cup sugar, and ¼ cup water in pan. Blend in egg, add remaining water. Bring to full boil over medium heat, stirring constantly. Cool 5 minutes, stirring twice. Measure 1 cup filling, cover and cool completely. Pour rest of filling into baked pie shell. Prepare Dream Whip. Blend 11/3 cups Dream Whip into cooled reserved filling. Spoon over pie. Cover pie with remaining Dream Whip. Can use Cool Whip instead of Dream Whip.