Cheesy scalloped potatoes with chives

Potatoes, whole milk, sour cream (pasteurized cultured cream [milk], enzymes), sharp cheddar cheese (pasteurized milk, cheese cultures, salt, enzymes, annatto color, natamycin [mold inhibitor]), butter (sweet cream, salt), parmesan cheese (pasteurized part-skim milk, cheese culture, salt, enzymes), modified corn starch, salt, natural flavoring (yeast extract, salt), onion powder, white pepper, nisin preparation (salt, nisin (antimicrobial]), dried chives.