→ Main
01 -
1 lb ground beef
→ Vegetables
02 -
1 cup sliced mushrooms
03 -
1 small onion, thinly sliced
→ Bread and Cheese
04 -
4 slices Swiss cheese
05 -
4 slices rye bread
→ Seasonings and Fats
06 -
Salt and pepper to taste
07 -
1 tablespoon olive oil
08 -
2 tablespoons unsalted butter