Lightly grease an 8 inch, heat-resistant, non-metallic baking dish.
In a medium sized bowl, cream butter and sugar together until fluffy.
Stir in flour, salt, baking soda and oats.
Combine until well blended.
Press one-half of mixture into bottom of prepared baking dish.
Heat, uncovered, on roast for 5 minutes.
Spread jam evenly over baked oat mixture.
Crumble remaining oat mixture over jam and press lightly.
Heat, uncovered, on roast an additional 7 minutes.
Test for doneness with a wooden pick.
Allow to cool and cut into bars.