Caramelized Mushroom, Onion, Asparagus and Extra Sharp White Cheddar Omelet

I love to make omelets because they are quick, simple, and you can put whatever you are craving inside. I like my omelets with one egg because I love the really thin egg layer; my husband on the other hand, prefers a thicker egg layer so I make his with two eggs. I was craving an omelet for breakfast recently so I went in search of ingredients. I found some asparagus, mushrooms, onions, and extra