Preheat oven to 400 degrees F. Beat together butter and sugar until light and fluffy. Add combined flour, salt and soda; mix well. Stir in oats and wheat bran. Press half of crumb mixture onto bottom of greased 13 x 9-inch baking pan. Spread preserves over crumb mixture. Sprinkle with remaining crumb mixture. Bake in preheated oven for 25 minutes. Cool; cut into bars.