Grilled Pepper Jack and Roast Beef Sandwiches are a delicious and satisfying meal option. This sandwich features layers of thinly sliced roast beef, melted pepper jack cheese, and a tangy horseradish mayo spread. Grilled to perfection, the sandwich is crispy on the outside and gooey on the inside. The combination of flavors and textures makes this sandwich a crowd-pleaser for any occasion.