01 -
Preheat oven to 350°F (175°C).
02 -
Brown ground beef and diced onions with 1/2 tsp salt and 1/4 tsp pepper in a skillet until the meat is no longer pink. Drain the grease and set aside.
03 -
In a bowl, whisk together the cream of chicken soup, evaporated milk, milk, 1 tsp salt, 1/4 tsp pepper, and onion powder. Set aside.
04 -
In a greased 9×13" baking dish, layer 1/3 of the peeled and sliced potatoes, 1/3 of the ground beef mixture, followed by 1 cup of shredded cheddar cheese. Sprinkle with a bit of salt and pepper. Repeat these layers two more times.
05 -
Pour the milk mixture evenly over the top of the layered casserole. Cover the dish with aluminum foil and bake for 1 hour.
06 -
Check the potatoes to ensure they are tender, then uncover and sprinkle the remaining cheese on top.
07 -
Bake uncovered for an additional 5 minutes until the cheese is melted. Remove from the oven and allow the casserole to sit for 15 minutes to thicken before serving.