You've got the steak out of the pan and the drippings in that pan are so good you'd lick it clean if it wasn't 500 degrees. Here's a little trick to add even more to your steak. Throw in:
1/2 cup shallots
1 cup red wine
2 tablespoons Dijon mustard
1/2 cup fresh chopped herbs (basil, oregano, cilantro, parsley, etc.)
2 crushed garlic cloves
Stir everything together in the flaming hot pan and pour out once combined. You can top your steak with this sauce or use it on baked potatoes, vegetables or any other side dish you have to go with this, the best steak of your life.