Another way to save some money is to use your toster oven instead of your conventional oven. This is really only good for small portions or reheating, but it makes more sense to use a small oven for a small amount of food. It takes less time to pre-heat and uses less electricity. Plus in the summer it doesn't make the house as hot.
Another trick is to wrap the little toaster oven pan in foil. This way you don't have to wash it after you're done cooking.
If you don't own one you can pick one up at Wal-Mart for about $40 or $50.