Something like this:
http://www.epicurious.com/recipes/food/views/mexican-chocolate-cake-109342
Or just ice cream sundaes.
Flan is incredibly difficult to make -- 90% of the time it turns out disgusting because the texture is too curdy, too watery, too solid, something. I never order it, but occasionally I'll try it, and I have had good flan. But it's just extremely rare. It's not like brownies or something, where even if you mess it up a little, they're still usually delicious.