Good tips. I probably will use my microwave for 'baking' from now on.
Best response to my latest cake: my husband asked me last night if there was any cake left. I gave him some cake frosted with low-fat Neufchatel cheese mixed with Brown-sugar-Splenda and vanilla. It's good, with a cup of hot coffee!
I'll bet your cola cakes would work fine in the brownie baking dish in the microwave.