Preheat oven to 350 degrees.

Line 13x9 inch pan with tin foil, with ends of foil extending over sides and spray with cooking spray. Microwave chocolate and butter in large microwavable bowl for 2 minutes or until butter is melted. Stir until chocolate is completely melted. Add sugar and eggs, mix well. Stir in flour until blended. Spread half of the batter onto the bottom of prepared pan.

Bake for 25 minutes.

Meanwhile, microwave caramels and cream in a microwavable bowl for two minutes, or until caramels begin to melt, stir. If caramels aren't completely melted place back in microwave for 15 seconds and stir again. Repeat until completely melted and mixed together. Stir in nuts.

Spread caramel mixture over brownie layer in pan, cover with the remaining brownie batter.

Bake for 30 minutes (the top of the brownies will feel a little soft, but will harden as they cool.)

Use foil handles to lift brownies from pan before cutting to serve.