This looked so straight-forward (and ended up turning out very well), but I had a couple hiccups that I wasn’t expecting. First, when I was dissolving the sugar into the melted butter, it pretty much became caramel instantly. Something about the instructed method was a little wonky. I ended up removing some clumps of caramel when I added the rhubarb and it was fine. Also, my cake took about 34 minutes to bake, not the 25 suggested. Another reason to cook to your wanted result and not to time!
I liked the tartness of this cake. Husband wasn't too into it. It ended up being relegated to the break room at work.