"Philly Cheese Steak" Skillet

(based on Philly cheese steak recipes, but made with hamburger and in a skillet)

Cook

• 1 T olive oil
• 1 c chopped onion
• 1/2 c chopped green pepper

in a large skillet until tender.  Remove from skillet and place in small bowl.  Add

• 1 T vinegar
• 2 t Worchestershire sauce

to bowl.  In same skillet, brown

• 1 lb ground beef (or 1 lb beef cut in thin strips).
• 1/2 t salt and/or garlic salt
• 1/4 t black pepper

Drain off fat.  Add onion/pepper mixture to skillet.  When heated, mix in

• 1/2 c mayonnaise

and then top with

• 4 oz Mozzarella cheese
• 1/4 c Parmesan cheese.

Cover and let sit on low to no heat until cheese is melted.  Serve on a plate or on a bun.