- cooking spray
- 1 (18.25 ounce) box yellow cake mix
- 1/2 cup butter, melted
- 1 (12 fluid ounce) can evaporated milk, divided
- 1 cup toffee baking bits
- 1 (14 ounce) package individually wrapped caramels, unwrapped
- Preheat an oven to 350 degrees F (175 degrees C). Coat a 9×13 inch baking pan with cooking spray.
- Mix the cake mix, melted butter, and half of the evaporated milk in a large bowl. Pat half of the mixture into the bottom of the prepared pan, reserve the remaining half for later use. Bake for 6 to 8 minutes. Remove baking pan from the oven; immediately sprinkle with toffee chips.
- Place the caramels and the remaining half of the evaporated milk in a microwave safe bowl. Microwave on High in 1 minute intervals, stirring after each minute, until caramels are melted. Top the toffee chips with the melted caramel. Crumble the reserved cake mixture over caramel layer.
- Return the baking pan to the oven; bake for 15 minutes. Allow to cool completely before cutting into 24 bars.