Here is a great way to Doctor up the basic box brownie. I learned this from Joel's cousin Linda.
Mix up the according to the box. Put 1/2 the mix in the bottom of the pan and then layer 3 large candy bars on top of that, (I used Butterfingers) then cover with the rest of the mix and bake. I can't even describe the taste to you. You'll have to try it. ENJOY !:)