Cake - Sift together:
¾ cup flour
¾ tsp baking powder
In large bowl, beat 4 eggs until foamy. Gradually add:
¾ cup sugar
1 tsp vanilla
¼ tsp salt
Beat until thick (about 5 min).
Fold in flour mixture. Pour cake batter into 10x15" jelly roll pan (greased & lined with waxed paper). Bake 12-15 min @ 400. Turn out cake onto cloth dusted with icing sugar. Roll & let cool 1 hour.
Filling & Frosting:
Prepare 1 pkg lemon pie filling as directed, only with 1 egg & 1 ½ cup hot water. Chill 1 hour. Set aside ½ cup of pie filling.
Spread filling over cake. Re-roll. Fold ½ cup filling into prepared dream whip (1 envelope) Frost cake. Chill.