you can easily double the recipe if you are having extra guests!
only fill up the muffin cups 3/4 of the way as the egg cups puff up while baking and they could spill over.
be sure to grease the muffin tin really well so the muffins don't stick.
don't overstuff with too many veggies or the muffins will fall apart.
you can substitute some of the whole eggs for egg whites (but not more than half) if you are watching your cholesterol or want a healthier breakfast option.
if you try and use all egg whites, the muffins will come out spongy.
you can use a mini muffin pan to make bite sized muffins, just adjust the cooking time.
let them cool in the muffin pan for trying to remove them.
for easier removal, run a knife around the edges of the baked egg muffins to loosen them before lifting out.