Peel and cut apples into thin slices. In large bowl stir together brown sugar, flour, melted butter, lemon juice, cinnamon, vanilla extract, and salt. Once combined, add in apples and fold into mixture. Line a medium sized baking or casserole dish with coated apples and drizzle salted caramel sauce on top. Bake for 30-35 minutes or until apples are soft and caramelized. Allow to cool for an additional 10 minutes before serving.