Prepare the Meatloaf Mixture:

• In a large bowl, combine ground beef, breadcrumbs, egg, milk, chopped onion, minced garlic, salt, pepper, ketchup, and Worcestershire sauce.
• Mix well and shape into a loaf.

Prepare the Potato Casserole:

• In a separate bowl, mix sliced potatoes, sliced onion, half of the shredded cheddar cheese, cream of mushroom soup, milk, salt, and pepper.

Assemble the Casserole:

• Preheat oven to 375°F (190°C).
• In a 9×13 inch baking dish, spread the potato mixture evenly.
• Place the meatloaf on top of the potatoes.
• Top the meatloaf with extra ketchup.
• Sprinkle the remaining cheddar cheese over the potatoes.
• Drizzle the melted butter over the top.

Bake:

• Cover with foil and bake for 1 hour, or until the potatoes are tender and the meatloaf is cooked through.
• Remove foil for the last 15 minutes to brown the cheese.

Cool & Serve:

• Let it cool slightly before serving.
• Enjoy this hearty dish with your favorite side salad or steamed veggies!