01 -
In a large mixing bowl, thoroughly combine the all-purpose flour, rolled oats, brown sugar, ground cinnamon, and salt.
02 -
Pour the melted unsalted butter over the dry ingredients and mix until the mixture forms coarse, crumbly clumps.
03 -
Press half of the crumb mixture evenly into the base of a greased 9×13-inch baking pan to form a crust. Drizzle with salted caramel sauce and, if desired, sprinkle lightly with salt for contrast.
04 -
Spread the remaining crumb mixture over the caramel layer, pressing gently.
05 -
Bake in a preheated oven at 350°F (175°C) for 25 minutes until the top is golden and the filling is bubbling.
06 -
Allow bars to cool in the pan before slicing into squares and serving.