Step 1

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.

Step 2

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.

Step 3

Bake sandwiches, uncovered, in 350°F oven 15 to 20 minutes or until cheese is melted and rolls are golden brown.