butter & flour, for baking dish; 1 box Devil's food cake, plus ingredients; 10oz jar caramel + drizzling; 3T heavy cream; 2c sweetened shredded coconut, toasted; 1c melted chocolate chips - Prepare cake mix per pkg, bake 325F in greased & floured 9x13 for 26-28 min, until tests clean. Cool 15 min, then poke. In pan, heat caramel & heavy cream on low until warm & combined. Pour over cake, fully coat with coconut, drizzle with melted chocolate & more caramel. Let stand 10 min; slice & serve.