Cutting a multilayered Dagwood hoagie in half certainly makes it easier to eat. Well, unless you squeeze out the meat, cheese, and condiments in the process. Here’s a trick: Use a serrated knife to halve the top piece of bread before you build the sandwich. Once you’re finished assembling, guide the knife down through the rest of the sandwich using long sawing strokes. Less pressure on the top means more fixings stay put.