Heat oven to 350°. Grease bottom and sides of jelly roll pan, 15
1/2x10 1/2x1 inch, with shortening. Mix granulated sugar, butter,
vanilla and eggs in medium bowl with spoon. Stir in flour and baking
powder until dough forms. Reserve 1/4 cup dough; cover and
refrigerate. Pat remaining dough evenly in pan, using floured hands.