Apple Figgy Breakfast Bars

Name: Apple Figgy Breakfast Bars
Ingredients: 4 sticks non-hydrogenated, non-dairy margarine, softened; 1/2 cup plus 2 tablespoons granulated sugar; 1/4 cup confectioner's sugar; 1/4 cup applesauce; 2 teaspoons vanilla bean paste; 1/2 teaspoon lemon zest; 4 1/4 cups gluten-free flour mix, King Arthur preferred, plus about 1/4 cup more for rolling; 3 teaspoons baking powder; 1 teaspoon ground cinnamon; 1/4 teaspoon kosher salt; 1 cup Apple Fig Jam; 1/4 cup rice or hemp milk, vanilla flavor preferred; 1/2 cup demarara sugar