Chow rounds up some delicious alternative uses for waffle-irons, ice-cream makers, and slow cookers. The criteria are: "(1) the food should taste as good or better than when made in the conventional manner, (2) the cooking time should be equal to or shorter than normal, and (3) the method should use the appliance in a way that's totally different from what it's known for." They were a lot more thorough with the waffle-iron than the other two (muffins, brownies, and hash browns), though slow-cooker souffle sounds lovely.
To make this Smoked Cheddar Soufflé in a slow cooker, start by filling a small saucepan with water and bringing it to a boil over high heat. Once the water is boiling, reduce the heat to low, cover the pan, and let the water simmer while you prepare the soufflé. Follow steps 1 through 5 of the recipe, without preheating the baking sheet.
Once the soufflé is ready, pour about 2 cups of the simmering water into the slow cooker and place the soufflé dish in the water (the water should come a third to halfway up the sides of the dish). Cover the slow cooker and cook the soufflé on high until it has puffed and is set in the middle, about one hour and forty-five minutes.