Heat a nonstick skillet over medium-high heat.
In a medium bowl, mix together the meat, horseradish, cheddar pieces, scallions and grill seasoning. Form 4 patties and drizzle them with EVOO. Cook the burgers for 5-6 minutes on each side. Spread mustard on the bun bottoms and cranberry sauce on the bun tops. Place the burgers on the bun bottoms, top with romaine leaves, and set the bun tops in place. Serve fancy chips alongside.