1boxchocolate or devil's food cake mix, any brand, plus eggs, oil and water called for on the boxUse avocado oil or light olive oil for the oil.
1can (14 oz)sweetened condensed milk
1jar (10 oz)creamy caramel sauce (or 10 oz measured)Any brand; a creamy sauce soaks in better than a stiff caramel.
1container (8 oz)Cool Whip, thawed, or homemade whipped cream
1/2cuptoffee bits
Instructions
Bake the cake mix in a greased 9x13-inch pan according to the box directions, typically 350°F for 20–30 minutes, using avocado or light olive oil.
Let the cake cool completely on a wire rack.
Poke holes all over the cake, about 1 inch apart, with a round wooden dowel.
Pour the sweetened condensed milk evenly over the cooled cake.
Pour the caramel sauce over the top and spread gently to cover.
Cover and refrigerate at least 2–3 hours or overnight.
Spread the whipped topping over the chilled cake and sprinkle with toffee bits.
Slice and serve cold. Refrigerate leftovers, covered, up to 3 days.
Notes
From scratch: use my Devil's Food Cake recipe baked as a single sheet in a 9x13 pan at 350°F for 20–30 minutes; skip its frosting since the whipped topping replaces it.
Make ahead: complete through step 6 a day ahead; add topping and toffee before serving.
Storage: cover with a lid or foil (no plastic wrap).