Guy Fieri and Dean McDermott are in the kitchen together! They're making Grilled Hanger Steak with flambeed Green Peppercorn Sauce. Next, Dean makes his signature "New Old Fashioned" cocktail, a solid, fresh take on the old classic. Then, Guy shows Dean his Brussels Sprout Gratin: Creamy and cheesy inside, with a nice crunchy top. For dessert, Grilled Caramel Apple Brioche Sundae.