01 -
Turn on your oven and set it to 350°F (175°C).
02 -
Warm butter or oil in a pan over medium heat. Brown the ground beef and onion together, then drain the extra grease.
03 -
Combine mushroom soup, milk, Worcestershire sauce, and a pinch of salt and pepper in a bowl. Stir well.
04 -
Grease a baking dish. Place half the potato slices in the bottom, then spread the beef mixture on them. Sprinkle half the cheese over it. Do another round of layers.
05 -
Pour your mixed soup sauce evenly across the top of the layers.
06 -
Use foil to cover the dish and bake for 45 minutes.
07 -
Take off the foil and keep baking for another 15 minutes. The potatoes should soften, and the cheese should bubble.
08 -
Sprinkle parsley, green onions, or chives on top if you'd like before serving.