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.