Patty Melt

Combine beef, salt and pepper and mix lightly.

Shape into 2 patties.

In a greased heavy frying pan, grill hamburger patties over medium-high heat 4 to 5 minutes per side for rare and 6 minutes per side for medium.

Add vegetable oil to pan and then onions.

Saute onions until soft and golden brown.

Top 2 slices of bread with hamburgers, then with onions, a slice of cheese and remaining slices of bread.

Lightly butter outside of sandwich and grill on a griddle or in a heavy frying pan until brown on both sides and cheese is melted.

(If you prefer, you can make sandwich with rye toast and melt the cheese under a broiler.)