Preheat oven to 350°.

Grease 8x8 pan and line with greased foil.

Mix brown sugar, flour, baking soda, salt, & oats.

Toss mixture with melted butter until thoroughly coated.

Press 1 1/2 cups of mixture into bottom of pan.

Spread jam over top of pressed mixture.

Sprinkle remaining mixture over the jam and press it down lightly.

Bake 35-40 minutes. Top should be lightly browned.

Let cool before cutting.