Preheat the oven to 300° F. Line the bottom and sides of a 9 x 13 inch baking pan with parchment paper, leaving enough overhang on all sides. Set aside.
Make the crust: Melt 1 cup of butter. Combine with ½ cup granulated sugar, vanilla, and salt in a medium bowl. Add 2 cups flour until combined. Press the mixture evenly into the prepared baking pan. Bake for 20 minutes or until lightly browned.
Make the apple filling: Combine FLAV-R-PAC® Fruit Favorites Apple Cubes, 4 tablespoons of all purpose flour, 4 tablespoons of granulated sugar and 1 teaspoon of cinnamon in a large bowl. Set aside.
Make the streusel: Combine oats, brown sugar, remaining ¼ teaspoon cinnamon, and remaining ½ cup flour together in a medium bowl. Cut in ½ cup butter (chilled) with a pastry blender until mixture resembles coarse crumbs. Set aside.
To assemble: Remove crust from the oven, and turn the oven up to 350° F. Evenly layer the apples on top of the warm crust. Sprinkle the apple layer with streusel and bake for 30 – 35 minutes or until the streusel is golden brown. Remove from the oven and allow to cool for 20 minutes at room temperature.
Cut into 16 smaller bars. Once cut, drizzle caramel sauce on top of each.
