Better-Than-Girl-Scout Samoas Cookie Bars

"These are better than Samaos, easier than making individual cookies, and no mixer required. They have an Oreo crust topped with coconut, chocolate chips, and are drenched in salted caramel. They're very chewy, rich, and decadent. Corn flakes help absorb the liquid so the bars stay intact but you can't taste them. I used Trader Joe's salted caramel but you can use another brand or make your own. Don't use ice cream sundae caramel sauce. When you take the easy bars out of the oven they'll be bubbling vigorously. Allow at least 1 hour for them to cool and set up, longer if possible before you sink your teeth into all the gooey layers, textures, and flavors...."