Just dust off that crock pot you've got hiding in the back of your pantry, fill it with water, and plop in a few cans of sweetened condensed milk. Set your slow cooker on low, and start daydreaming about ways to use up that dulce de leche. Click on the link for more detailed instructions from the blog Cupcake Project for making dulce de leche in a crockpot.
While I have chronicled the traditional stovetop method, the crock pot method seems like a foolproof way to get your dulce de leche fix. Unfortunately, it takes eight hours to work its magic, so it's not suitable for emergency cravings or last-minute desserts.
I don't own a slow cooker, so I can't personally attest to the results; however, judging from the comments I've seen on other blogs, it looks as though you can't go wrong with this method. If you try making dulce de leche in your crock pot, let me know how it works out!
[Photo credit: roboppy]