I picked up a bottle of Kraft's New Sandwich Shop Mayo in Horseradish Dijon and couldn't wait to try it! I remembered how much we liked the Hot and Spicy flavor on some Roast Beef Panini so decided to make some more. These were almost identical except for the new mayo (of course) and I also used a combination of Muenster and Pepperjack Cheese (to kick it up a notch!). You can definitely taste the horseradish in these and just perfect with the beef! I can't think of a better way to spend Sunday!