Made too much. What to do with the overage on short notice?
Make a mini quiche.
Grease a muffin tin and pour the filling in the holes. Bake along with your quiche, although they will get done sooner. Voila – mini crustless quiches. Freeze them and you’ve got a quick breakfast thing.
Down the hatch, bro.
Make an omelette? :dubious: Probably the simplest and most direct way to deal with it.
What are the fillings? Bacon and cheese? Ham and asparagus? Spinach and tomato?
You made me hongry now. Thanksalot 
Pour it into a custard dish, stick it in a water bath, and bake it just like any other custard.
Omelette was my thought, or put it in the oven at the same time as the quiche and make a frittata. Can’t go wrong either way. 