In a medium bowl, combine almond flour, coconut flour, salt, vanilla, maple syrup, and coconut oil. Stir together until it is well mixed and everything is incorporated evenly. Press 1/2 of the mixture into the bottom of the pan and top with the strawberry jam, spreading evenly. Top with remaining shortbread. The best way to do this is take small pieces and press flat and then lay on top, pressing the edge of each piece together as best as possible. Bake for 30-33 minutes, until golden brown around the edges.