Ingredients. 8 Tbsp. FRENCH'S® Dijon Mustard 8 large slices Italian bread, cut 1/ 2-inch thick 8 oz. thinly sliced deli ham 8 oz. sliced Swiss or Fontina cheese. To add zip to your panini, spread with whole-grain mustard or add chopped spicy Season with salt and pepper, then add another 2 cheese slices, 1 or 2 ham. Sep 21, These ham, apple, and swiss panini are the perfect fall sandwich! If you don't have one, and you're a fan of things like grilled cheese, GET.