Blackberry Crumb Bars

Description
This recipe came from the Hartman Estate Sale. It was obtained it as part of the purchase of the Family Collection from the Hartman Estate in Arlington, Texas in 1984.

Ingredients

 * 1 cup brown sugar, firmly packed
 * 1½ cups flour
 * ¾ cup butter
 * 1½ cups oatmeal
 * ½ teaspoon baking soda
 * 1 teaspoon vanilla extract
 * ½ teaspoon salt
 * 2 cups blackberry jam
 * powdered sugar

Directions

 * 1) Mix all ingredients except blackberry jam until crumbly then spread ½ of the mixture into a greased rectangular pan.
 * 2) Spread jam over crumbly mixture then cover with remaining crumbs.
 * 3) Bake at 350°F for 25 minutes.
 * 4) Allow to cool for a few minutes then sprinkle with powdered sugar.