Preheat oven to 375°F (190°C). In a large skillet over medium heat, cook the ground beef until browned. Add onion and garlic, cook until softened, then drain excess fat.

In a bowl, mix cream of mushroom soup, milk, salt, paprika, and black pepper until smooth.

Grease a 9x13 baking dish. Layer half of the potatoes, half of the beef mixture, some sauce, and a portion of cheese. Repeat layers.

Cover with foil and bake for 45 minutes. Remove foil and bake an additional 15–20 minutes until cheese is melted and golden.

Let rest for 10 minutes before serving. Garnish with fresh parsley if desired.