Preheat oven to 350°F.
Cream together butter and sugar until light and fluffy. Stir in egg yolks and almond extract.
Gradually add flour, mixing thoroughly. Stir in nuts.
Spoon half of the batter into a lightly greased 7X11 inch of 8 inch square pan, spreading batter evenly with the back of a spoon.
Spread fruit jam (apple, strawberry, raspberry. blueberry, etc) evenly over top of batter nearly to the edges, leaving 1/4 inch uncovered near edge of pan.
Shape the remaining batter by hand and fit it to cover over the batter in the pan.
Bake at 325°F for 50 minutes or until golden.
Turn out onto a rack to cool for 5 minutes before cutting into tiny squares or bar shapes while still warm.
If desired, sift a light dusting of confectioners' sugar over tops of each bar or square.
Submitted by: CM