We love the idea of breakfast sandwiches for a crowd, but short-order cooks we are not, nor are we interested in becoming. Instead, we figured out a genius way (if we do say so ourselves) to cook two dozen eggs all at once. We whipped them up in a blender so they were nice and evenly emulsified then poured them into a parchment-lined rimmed baking sheet. Fifteen minutes later, we topped them with cheese, cut them into squares, and slapped them on a toasted bun. Assembly is fast and easy work for you and a friend, but if you want to keep this casual, you could put the baking sheet out and let folks assemble their own.