Thinly sliced Deli Roast Beef is sandwiched between rolls and baked with cheese till golden and delicious.
Preheat oven to 350°F.
Coat 9 x 13-inch baking dish with cooking spray. Cut rolls in half, horizontally. Place bottom half in prepare baking dish; spread horseradish on cut side. Top with Deli Roast Beef and cheese. Close sandwiches. Using a paring knife, cut into 12 sandwiches.
Combine butter, Worcestershire sauce, parsley, sugar and onion powder in small bowl; mix to combine. Pour butter mixture evenly over prepared sandwiches. Cover and refrigerate 1 hour to overnight.
Bake sandwiches, uncovered, in 350°F oven 15 to 20 minutes or until cheese is melted and rolls are golden brown.