Step 1: Preheat your oven to 400°F (200°C). If using a baking dish, lightly grease it. If using an oven-safe skillet, ensure it's clean and ready for stovetop-to-oven action.
Step 2: In your large skillet (if oven-safe) or a separate large pan, brown the ground beef over medium-high heat. Break it up with a spoon as it cooks. Once no pink remains, drain off any excess fat.
Step 3: Add the chopped onion and minced garlic to the cooked ground beef. Sauté for 5-7 minutes, or until the onion is softened and translucent and the garlic is fragrant.
Step 4: Stir in the diced potatoes, beef broth, Worcestershire sauce, smoked paprika, dried oregano, salt, and black pepper. Bring the mixture to a gentle simmer, then reduce heat to low, cover, and cook for 10-15 minutes, or until the potatoes are tender-crisp.
Step 5: If you cooked in a separate pan, transfer the mixture to your prepared 9x13 inch baking dish. If using an oven-safe skillet, simply ensure the potato mixture is evenly spread across the bottom.
Step 6: Sprinkle the shredded cheddar cheese evenly over the top of the potato and beef mixture.
Step 7: Transfer the skillet or baking dish to the preheated oven. Bake for 15-20 minutes, or until the cheese is melted, bubbly, and lightly golden brown. For an extra golden crust, you can briefly broil for the last 1-2 minutes, watching carefully to prevent burning.
Step 8: Carefully remove from the oven. Let it rest for 5 minutes before serving to allow the flavors to meld and the cheese to set slightly. Garnish with fresh chopped parsley or green onions if desired.