Always grate your own cheese for richer flavor, plus the ready-grated cheese in the supermarket dairy section has talcum or other agents added to keep the cheese from sticking together.
Substitute cheddar cheese for the Asiago in this recipe for a tasty switch.
These grits make great leftovers and will store in an airtight container in the fridge for several days. They are very fast to heat up in the microwave because of all the dairy. Be careful when handling the freshly-prepared or reheated grits; they are HOT!