Preheat oven to 425°F. Cut a 1/2-inch-thick slice off top of bread loaf; set aside. Hollow out bottom of loaf with your hands, leaving 1/2-inch-thick shell. (Reserve removed bread for another use.) Brush mustard onto cut sides of bread.
Fill loaf with layers of half of the cheese, the ham, tomatoes and onions; sprinkle with remaining cheese. Cover with top of bread. Wrap in foil.
Bake 30 to 35 min. or until filling is heated through and cheese is melted. Let stand 10 min. before cutting crosswise into 8 slices to serve.
Serve with a mixed green salad and a piece of your favorite fresh fruit.
Substitute leftover cooked turkey or chicken for the ham.
Make it Easy
For best results, use a serrated knife to cut up the hot sandwich to serve.
Calories From Fat
% Daily Value*
Total Fat 11g
Saturated Fat 6g
Trans Fat 0g
Total Carbohydrates 35g
Dietary Fibers 2g
* Percent Daily Values are based on a 2,000 calorie diet.
* Nutrition information is estimated based on the ingredients and cooking instructions as described in each recipe and is intended to be used for informational purposes only. Please note that nutrition details may vary based on methods of preparation, origin and freshness of ingredients used.