Meet the KitchenAid Precise Heat Mixing Bowl: a handy tool for Tilt mixers that lets you make fondue, soups, yogurt, and everything in between. It turns your mixer into a cooker, heating the mixing bowl from 70°F to 220°F in two-degree increments. There is also a digital display to show current temperature. You also get a 10-hour timer.
The above video shows what you can do with this.