Preheat your oven to 350°F, and grease an 8-inch square baking pan.
In a medium bowl, whisk together the flour, oats, brown sugar, baking powder, and salt. Add the buttery spread and whisk until combined.
Evenly press 2 cups of the mixture into your pan. Spread the jam over top, then sprinkle with the remaining mixture. Lightly press the top mixture into theam.
Bake for 25 minutes. Let cool completely before cutting into bars.