Transform a classic side dish into the main attraction with a dinner of stuffed baked potatoes. Despite their low cost, potatoes are surprisingly nutritious and packed with fiber, vitamins and protein. Microwave, bake or boil your spuds until they're soft, then slice them open and stuff the extra ingredients inside. You can even let your family members choose their own additives from whatever you have around the house. Create the classic broccoli and cheese potato using frozen broccoli and shredded cheese, or try variations made with onions, sour cream, salsa or bacon bits. Add canned soup or a salad on the side to complete this filling, low-cost dinner.