My contribution for Sweets Day during Lab Week was Cake Batter Fudge (http://bakedfromabox.blogspot.com/2012/07/cake-batter-fudge-10-minute-recipe.html).  I saw this on Pinterest and it looked so good plus it was easy to make.  You actually use boxed cake mix for this.  Now I ended up using a whole box because I ended up tripling the recipe to get a 9×13 pan of fudge.  This was not as big as a hit as the coffeecake but there were a few people that loved it.  I think this is one of those things that you are either going to love it or hate it, there is no in between.  I liked it and would probably make it again, even if it is just for myself.  I think this would be a fun recipe to make with a kid, since you only use the microwave for cooking.