Or screw the formal sandwich. Get a crusty french roll, small wedge of brie, and Granny Smith apple (you’ll want a metal knife capable of cutting the apple). Just alternate eating slices of each. Move to the apple when your mouth is too dry, the bread when it’s too wet or highly flavored, and brie when it’s too sweet or bland. Repeat.
(Ideally, you sneak out and hit the supermarket in the middle of the morning, so you can leave the brie out for a couple hours and let it get to room temperature).