To prepare a sweet rice cakes stuffed with yellow beans beans and grains recipe, you will need: Sweet Rice Cakes: Preheat the oven to 350?F (180?C) and grease the insides of the cake pan with cooking spray. Add the rice to the greased pan and stir until it is evenly coated. Bake the cakes for 20 to 25 minutes or until they are golden brown.