Sift flour, baking soda and salt together. Add brown sugar, oatmeal and walnuts. Add melted butter, blend. Press half of the mixture into greased 7.5x11.5-inch pan.
Cover with mixture of raisins and jam. Top with remaining flour mixture.
Bake at 375 degrees for 30 minutes. When cooled, cut into squares. Makes about 30 squares.