- Preheat the oven to 350°F (175°C). 
- In a skillet over medium heat, brown the ground beef. Drain excess grease and season with salt, pepper, garlic powder, onion powder, and paprika. 
- In a small bowl, whisk together the cream of mushroom soup and milk until smooth. 
- Grease a 9x13 inch baking dish. Layer half the sliced potatoes on the bottom, followed by half the onions and half the beef. 
- Pour half the soup mixture over the beef and sprinkle with half the cheese. 
- Repeat layers with remaining potatoes, onions, beef, soup mixture, and cheese. 
- Cover with aluminum foil and bake for 1 hour. Remove foil and bake an additional 15 minutes, or until the potatoes are fork-tender and the top is golden and bubbly. 
- Let it sit for 5 minutes before serving. Garnish with parsley if you’re feeling a little fancy.