There are several websites that offer recipes for desserts that can be made in a rice cooker. The websites for Yummly and Just a Pinch Recipes have quite a few of these recipes, as does Allrecipes.com.
These three websites offer recipes for more traditional desserts, such as a simple rice pudding as well as for desserts that are a bit more exotic, such as Thai mango sticky rice. Both of these recipes can be found on Yummly.
Allrecipes.com lists a recipe for rice pudding in a rice cooker that takes 40 minutes, requiring only simple ingredients, including skim milk, short-grain white rice, white sugar and ground cinnamon. This website lists a star rating and reviews for each recipe.