M Burger is a fast-casual burger mainstay from restaurant group behemoth Lettuce Entertain You. In any of its numerous locations across the state of Illinois, you can (and should) indulge in the Old Fashioned Cheeseburger -- lettuce, pickle, onion, tomato, secret sauce -- or the M Burger -- same, but plus bacon, minus tomato. Make it a double, you’re in the Midwest, after all. Get the crispy chicken sandwich or turkey burger if red meat isn’t your thing, but no matter what you order, get a side of fries and a signature shake (for sipping and for dipping your fries). Thank us later.