Boxed Potato Casseroles
Boxed potato dishes, particularly scalloped potatoes and other cheesy potatoes, pack a lot of salt. Some also contain sodium from MSG and preservatives. A 1/2-cup (27-gram) portion of dry scalloped potato mix — which makes a 2/3-cup cooked serving — has 450 mg of sodium, or 19% of the RDI. Everyone would be better off swapping boxed potatoes for more nutritious starches, such as a baked sweet potato or winter squash.