I was told this recipe years ago. I do not know why they called it Gypsy Steak but that is the only name I know. The cooking of the steak makes the steak tender but I like to have the steak tenderized so I know it will be tender. This is not a food for health conscious people. I do use real butter not margarine. Its is a really decadent sandwich. I hope you enjoy it because my family has for over 30 years.
Place all the butter in cast iron pan,on medium heat. Let melt and add onions and peppers and steak. Let fry until butter is almost gone. Then add garlic the last couple of minutes.Salt And Pepper to taste.
Place mixture on bread and eat. This is a tasty sandwich.