Open-Faced Ham and Asparagus Sandwiches
Meanwhile, preheat broiler (if it not in a separate part of oven, arrange a rack 6 inches from the heating element). Mix mustard and mayonnaise together in a small bowl; spread onto one side of each bread slice. Layer ham, tomatoes, and fontina cheese onto bread slices, then arrange sandwiches in a single layer on a baking sheet.
Broil until cheese is melted and bubbly, about 2 minutes. (Watch closely to make sure bread doesn't burn.) Transfer sandwiches to plates and top with asparagus. Serve immediately with a green salad on the side, if desired.
Extra idea: Use the main ingredients—asparagus, ham, tomato, and fontina cheese—to make a beautiful frittata.