I had my first taste of cajeta at Fonda San Miguel in Austin, TX. It was a dessert I've never forgotten - crepas de cajeta (crepes with goat's milk caramel, served with cajeta ice cream). In fact, it's still on their menu, but I'm 2000 miles away, and that's a long haul for dessert even for me.
I had to learn to make cajeta for myself - and found a recipe in Authentic Mexican, by Rick Bayless. He has a crepas con cajeta recipe too, but the cajeta is really all you need. That and a spoon.