A frittata is one of the best use-it-up dishes out there. Whatever veggies happen be languishing in your fridge, you can fold em into a frittata and they always seem to go together somehow. (not to mention its also an incredibly easy way to get a nutritious breakfast on the table. ) our sheet pan frittata is no different, except that it also helps you feed quite a crowd without a ton of work. No crowd? No worries. This is perfect for meal prep too.