Make cake as directed on package for a 9x13 cake

Cool for 5 minutes

With the back of a wooden spoon, poke cake every 1/2 inch or so

Drizzle sweetened condensed milk evenly over cake.

Let stand until condensed milk has been absorbed into the cake.

Spread caramel topping on top.

Chill for 10-15 minutes

Spread Cool Whip over top of cake and crumble toffee chips on top.

Cover with saran wrap and keep refrigerated until ready to serve