This potato and ham casserole makes a big batch that serves at least eight people. The casserole includes cheddar cheese and a basic white sauce, with chopped onion and bell pepper to provide color and extra flavor. It's also an excellent way to use leftover ham. The casserole is easy enough to make for an everyday meal and special enough for a holiday dinner. Feel free to leave the ham out or reduce the amount and add an extra cup or two of potatoes and cheese. Use two 2-quart casseroles or a large lasagna pan for the dish. Go ahead and leave the bell pepper out if you're not a fan, or use a combination of red and green or yellow bell peppers. Waxy, low starch potatoes hold their shape better than high starch baking potatoes or russets. Choose red-skinned potatoes, round whites, or medium starch yukon gold potatoes. Even if you aren't cooking for a crowd, baking the potatoes in two casserole dishes has its advantages. Consider freezing one of the baked casseroles for another day or scale the recipe down by half for one smaller casserole.