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

In a large skillet over medium heat, heat olive oil, add ground beef, and cook for about 5-7 minutes until browned. Drain excess fat.

Add chopped onion and minced garlic to the skillet and sauté for 3-4 minutes until onion is translucent.

Spread the sautéed beef mixture evenly across the bottom of the prepared baking dish.

Thinly slice potatoes and layer them on top of the beef mixture. Sprinkle with salt, pepper, Italian seasoning, and paprika.

Sprinkle cheddar and Parmesan cheese over the potatoes, then pour beef broth around the edges.

Cover with foil and bake for 30 minutes, then remove foil and continue baking for another 15-20 minutes until potatoes are tender.

Let the casserole cool briefly before serving and garnish with fresh parsley if desired.