Spray
your whoopie pie pan with non-stick cooking spray. Crack an egg in to each cavity of your whoopie pie pan (or muffin tin). Use a fork or sharp knife to slightly “break” the yolk, allowing the yolk to ooze out in to the egg white. This will keep your cooked yolk from exploding or “puffing up” as it cooks and give you a nice flat cooked egg. Lightly salt & pepper the eggs (if desired)