Preheat oven to 180°C or 350°F

1. Cream the butter and sugar; add egg yolk and salt. Add flour gradually and beat.

2. Pat dough into thin layer in 12 x 12 inch pan.

3. Beat egg whites; add sugar until stands in stiff peaks.

4. Fold in ground nuts and flavoring.

5. Spread jelly over and swirl meringue on top.

6. Sprinkle with chopped nuts; bake for about 45 minutes.

7. When warm, cut in squares.