Step 1

Preheat oven to 350 degrees F (175 degrees C). Grease one 8 inch square pan, and line with greased foil.

Step 2

Combine brown sugar, flour, baking soda, salt, and rolled oats. Rub in the butter using your hands or a pastry blender to form a crumbly mixture. Press 2 cups of the mixture into the bottom of the prepared pan. Spread the jam to within 1/4 inch of the edge. Sprinkle the remaining crumb mixture over the top, and lightly press it into the jam.

Step 3

Bake for 35 to 40 minutes in preheated oven, or until lightly browned. Allow to cool before cutting into bars.