Try this method of baking and cooking sweet potatoes. You will get the same results for sure. Nobody will be able to make out whether the potatoes are cooked in an oven or solar cooker.
Place the sweet potatoes in a black pan and cook them in a solar heater. There is no need to add water. Leave them in the sunshine for 3 ½ hours or till they are fully cooked. Slice them and use whatever way you like. For more information please visit: http://sunshinecooking-sunshinecooking.blogspot.com