Heat a large Cast Iron Skillet
Add Butter or Oil
Chop Onion and Mince Garlic and add to Pan on Medium Heat until onion is clear
Add Grass-fed Hamburger made into patties 4 to 6 to fit your pan into the onion and garlic
Add seasoning to liking...salt, pepper, special steak seasoning
Cover and cook slow for about 5 min
Turn the burgers and season
Pull some of the onion mix to the top of burgers and cook a couple of minutes
Add cooking wine and mushrooms and cover for 5 min
Turn burgers and cook to temp
Turn off burner and add cheese and cover for 2 min.
Place on bun, bed of lettuce or plain ensuring they are covered in onion and mushroom sauce.
Rest about 3 to 5 min and serve.