Beef and Potato Bake Casserole

Preheat the oven to 350 degrees F (175 degrees C).
Grease an 11x7-inch glass baking dish with cooking spray.
Heat a frying pan over medium heat. Add the ground beef, onion, optional seasonings, salt, and pepper. Cook until the meat is brown and crumbly, then drain any excess fat.
In a mixing bowl, combine the milk, soup, stock, salt, and pepper. Mix until smooth.
Layer half of the sliced potatoes in the prepared baking dish. Top with about a quarter of the soup mixture and half of the browned meat and cheese.
Repeat the layers, ending with cheese on top.
Cover the dish with foil and bake in the preheated oven for 1 to 1.5 hours, or until the potatoes are fork-tender.
Remove from the oven and let the casserole rest for a few minutes before serving. Enjoy warm!