Mix red velvet cake mix, egg, water and oil with a wooden spoon.
Stir in nuts and chocolate chunks.
The dough will be thick.
Spray a 9x13” baking pan with cooking spray (or grease and flour pan).
Spread half of the cream cheese mixture in bottom of pan.
Spread out to cover surface of pan.
Then spread half of the red velvet brownie mixture over top of the cream cheese mixture.
It won’t spread evenly, but you can dollop it onto the mixture and move it around slightly to cover the surface the best you can.
Pour and spread remaining cream cheese mixture over top of the red velvet brownie layer, and then remaining red velvet brownie mix.
Using a wooden spoon swirl through all layers.
Don’t overdo it, but make sure you swirl the batter in 2 or 3 inch swirls throughout the pan.
Bake at 350° for about 40-45 minutes.
Be sure mixture is set in the middle.
Test with a toothpick.
Cook additional 5 or 10 minutes if necessary, depending on the heat of your oven.