To prepare bars: Preheat oven to 350 degrees. In medium bowl, combine flour and sugar. With pastry blender, cut in butter until crumbly. Press on bottom of greased 9- by 9-inch baking pan. Bake for 18 to 20 minutes, until edges are lightly golden brown. Spread jam over crust. To prepare topping: In a small bowl, combine brown sugar, eggs and vanilla. Beat at medium speed until well-mixed, 1 to 2 minutes. Stir in flour and salt until well-mixed. Stir in walnuts. Pour topping over jam; spread carefully to cover. Return to oven; bake 20 to 24 minutes, until golden brown and filling is set. Let cool completely. Cut into bars. Yield: 24 bars. Comments: This recipe was the grand prize winner in last years Land OLakes Butter Cookie Contest. Recipe Source: St. Louis Post-Dispatch - 12-07-1998 Formatted for MasterCook by Susan Wolfe - swolfe1@prodigy.net