Pre-heat oven to 350 degrees F (175 degrees C). Grease a 15-1/2 x 10-1/2 x 1 inch jellyroll pan.
Step 2
Cream butter, 1/2 cup of the sugar and egg yolks until well blended. Add flour and mix well. Pat dough evenly into bottom of prepared pan and bake for 15-20 minutes or until lightly browned.
Step 3
Remove pan from oven (but leave oven on). Let cool for 5 minutes then spread with the jam. Beat egg whites and salt until stiff but not dry. Carefully fold in remaining sugar and the chopped nuts.
Step 4
Gently spread on top of the jam, making sure to seal edges and corners. Return to oven for 25 minutes or until golden brown. Cut into 3 X 1 inch bars while still warm. May be stored airtight at room temperature up to a week. May also be frozen. Defrost covered at room temperature.
