Preheat your oven to 350°F (175°C). Line an 8x8-inch baking pan with parchment paper, leaving some overhang to easily lift the bars out after baking.
In a large mixing bowl, combine 1 cup white whole-wheat flour, 1 cup rolled oats, 1/2 cup coconut palm sugar, 1/2 teaspoon baking powder, and 1/4 teaspoon sea salt. Stir until evenly distributed.
Pour in 1/2 cup melted coconut oil. Mix until all the dry ingredients are moistened and the mixture starts to come together into a crumbly dough.
Take about two-thirds of the oat mixture and firmly press it into the bottom of the prepared baking pan to form an even crust layer.
Spoon 2/3 cup fruit-sweetened raspberry jam evenly over the crust, gently spreading it with the back of a spoon to cover the surface completely.
Crumble the remaining oat mixture over the raspberry layer, sprinkling it evenly to create a crumbly top.
Place the pan in the preheated oven and bake for 30-35 minutes, or until the top is golden brown and the jam is bubbly around the edges.
Allow the bars to cool completely in the pan on a wire rack. Once cooled, use the parchment paper overhang to lift the bars out, then slice into squares or rectangles.