hmmm...I wasn't totally involved in making this.  H measured it out & put it on the stove.  I just helped her take it off when it was ready since she was trying to watch and entertain O at the same time.  I'd like to actually make it myself.  When I do, I'll let you know what I discover, but you may have already hit the nail on the head.  I have a gas stove (would not have purchased a house without one! lol), and I typically use my Le Creuset pans when I do stuff like this.  They cook so much more evenly.  Do you have any heavy bottom pans?  You don't even have to spend a lot of money on them.  I have several from Aldi that are Le Creuset knockoffs, and they work just as well.  Let me know how it goes if you try it again.