Preheat the oven to 375°F (190°C) and grease a 9x13-inch baking dish.

In a large skillet over medium heat, brown the ground beef for about 5-7 minutes.

Add chopped onion and minced garlic, season with salt, black pepper, and paprika, and cook until the onions are translucent.

In a mixing bowl, whisk together cream of mushroom soup and milk until smooth.

Layer half of the sliced potatoes in the greased baking dish, followed by half of the meat mixture and half of the soup mixture.

Repeat the layering with the remaining potatoes, meat, and soup.

Cover with aluminum foil and bake for 45 minutes.

Remove foil, add cheese on top, and bake for an additional 15-20 minutes until the cheese melts.

Let it cool for 10 minutes before serving.