01 -
In a skillet or large pot over medium heat, brown the ground beef and onion together. Drain any excess grease.
02 -
Stir in the sliced potatoes, cream of mushroom soup, and milk. Season with salt and pepper. Bring to a boil, then reduce heat and simmer for 10-15 minutes, or until the potatoes are tender.
03 -
Preheat your oven to 350°F (175°C).
04 -
Pour the mixture into a greased casserole dish.
05 -
Sprinkle the top with shredded cheese. Bake for 20-25 minutes, or until the cheese is melted and bubbly.