Instructions

1. 1

   Preheat oven to 375°F (190°C). Lightly grease a 9x13-inch casserole dish.

2. 2

   Prepare the beef: In a large skillet over medium heat, cook the ground beef with Worcestershire sauce, paprika, and thyme until browned and fully cooked. Drain excess fat.

3. 3

   Layer potatoes and onions: Spread half of the sliced potatoes evenly in the prepared dish. Sprinkle half of the onion slices and season with salt, pepper, and garlic powder.

4. 4

   Add beef: Evenly layer the cooked ground beef over the potatoes and onions.

5. 5

   Second potato layer: Top with the remaining potato slices and onions, then gently press down to compact.

6. 6

   Add cheese topping: Mix cheddar, Parmesan, and milk together in a small bowl, then spread over the top layer.

7. 7

   Bake: Cover with foil and bake for 35 minutes. Remove foil and bake an additional 15-20 minutes until the potatoes are tender and cheese is golden and bubbly.

8. 8

   Cool and serve: Let stand 5 minutes before slicing to allow layers to set.