Pizza chains update lineups to compete for top pie title

A tastier sauce, a better cheese combination, flavored crust, olive oil, a new crust thickness.

Those are some of the ingredients needed for an improved pizza recipe — and for an epic pizza battle.

America's largest pizzeria chains are duking it out across counters and doorsteps, as ever-budget-conscious people, still recovering from the recession, continue to look for cheap fast food.

Michigan seems the epicenter of the pizza marketing war zone.