Hands up, who’s on a diet?? Back away from this post. The butter, the cheese, the burger, so mmm mmm good. But oh so bad for you. Save this for a rainy day, a big fat old cheat day. You’ll thank me then but hate me now. It’s okay, Bill made me go on a 3 mile run before we could eat these bad boys.
1/2 stick butter
1 whole yellow onion, halved and sliced
3/4 pounds ground beef
1 tbsp Worcestershire sauce
4 slices rye bread
4 slices Swiss cheese
In a small skillet, melt 1 tablespoon of the butter over medium-low heat and add the sliced onions, cooking slowly until the onions are soft and golden brown, about 20 to 25 minutes. Be sure to stir occasionally so the onions do not burn.
While the onions are cooking, form the patties by combining the ground beef, Worcestershire and some salt and pepper and molding two even patties. Melt 1 tablespoon of the butter in a separate skillet over medium heat. Cook the patties on both sides until totally done in the middle, about 3-5 minutes.
On a clean griddle or in a large skillet over medium heat, melt 1 tablespoons of the butter and grill the sandwiches until golden brown. Layer the sandwiches: slice of bread, swiss cheese, hamburger patty, 1/2 cooked onions, swiss cheese and final slice to bread. Once one side is browned, remove the sandwiches and add the remaining 1 tablespoon of butter to the skillet. Cook until bread is golden brown and crisp, and until the cheese is melted.