Here is how my routine goes.
Prepare your fillings... cook the meat and veg (if you want them done) and have your cheese ready, if you want cheese in it.
Beat your eggs (I think I typically go three) and add just a bit of milk (I like my scrambled eggs dense, but like my omelette a little more fluffy... just a matter of preference) in a cup. Melt your butter and/or oil in the pan (for what I'm going to do... you need it to be all metal... no plastic handle). Once your butter is melted and hot, tilt the pan a bit to collect the fat and pour your egg mixture in there and then put the pan back on the burner.
Wait till the egg starts to set and use a spatula to left the edges and let the uncooked egg run underneath. Do this until you have everything almost completely cooked... then add all of your fillings on one side of the the mostly set eggs.
Then you throw that whole deal in the oven, which I conveniently forgot to mention earlier (350-425) for just a few minutes... till the rest of the egg sets and the cheese melts. Fold and slide onto a plate.
If you don't like chicken fried steak, then I don't like you.