Indulge in the ultimate roast beef sandwich, where tender, thinly sliced beef meets melty cheddar cheese and zesty horseradish sauce. This savory masterpiece is perfect for any occasion, from game days to casual lunches. With fresh arugula adding a peppery crunch and customizable toppings like tomatoes and pickles, this sandwich is sure to impress your family and friends. Elevate your culinary experience with this simple yet delicious recipe!