In the Big Easy, Robert Irvine takes a bite out of the most decadent grilled cheese sandwiches he's ever tasted. Mexican fried cheese and braised oxtails are sandwiched between cheese-stuffed pupusas. In Boston, childhood favourite mac and cheese is oozing with a luscious cheesy sauce over thick pasta noodles and topped with BBQ pulled pork. Finally, in San Antonio, two traditional Middle Eastern cheese desserts provide some sweet, salty bliss.

Robert Irvine tests his mettle in Downey, Calif., with a super spicy burrito stuffed with succulent marinated chuck roast and creamy nacho cheese. Then, in Denver, a decadent dark chocolate cake is pushed to new heights with whiskey, cherry pipe tobacco and hot chile peppers. Finally, in St. Louis, a noodle dish is smothered with Korean and Mexican sauces so seriously spicy, it's gone nuclear.

Stuffed and Stacked Robert Irvine is sharing some of the most indulgent food that's stacked and stuffed with flavour. First, he's in New Orleans to try beignets stuffed with savoury seafood or sweet berry cheesecake. In Denver, classic Venezuelan sandwiches are stacked with succulent simmered meat between fried plantain buns. Then, in Inglewood, Calif., Robert discovers red velvet strawberry cheesecake cake and a banana pudding cheesecake layered with homemade goodness.

Sinful Sandwiches Robert Irvine starts his cheat day quest in New Orleans, where he finds a decadent, gravy-smothered roast beef and fried shrimp po'boy. Then, in Los Angeles, the classic American grilled cheese gets a savoury Mexican twist by adding tender roast marinated in sweet, smoky peppers. Finally, in Denver, a barbecue sandwich is taken to new heights with hickory-smoked beef, pork and sausage, slathered with homemade creamy cheese sauce and topped with beer-battered onion rings.

Robert Irvine samples extraordinary confections, starting in California with a unique s'mores dessert made with fries; he meets a chef topping juicy fried chicken with ice cream in San Antonio before visiting a historic Las Vegas doughnut shop.

In Torrance, Calif., Robert Irvine tries a Korean-inspired burger made with beef bulgogi and crunchy kimchi and served with truffle fries; there's a blue milkshake in Boston and a sweet, salty ice cream burger with housemade tots in San Antonio.

Indulging in the most mouthwatering breakfasts around, starting with homemade baklava-inspired pancakes in Long Beach, Calif.; there are life-changing mac and cheese waffles in Richmond and a sinful caviar omelette in Las Vegas.