Making a great sandwich is an art form. Luckily, we’ve made nailing it totally effortless. (All you have to do is assemble and dig in.) This one’s got crusty bread, salty prosciutto, ripe tomato, and mozzarella—along with a tangy touch of balsamic and a dose of creamy mayo. Put it together at the office or be your own best friend and whip it up before you head to work. When noon rolls around, you’ll be looking at the fridge with heart eyes.