Prepare the Potato Base: Preheat the oven to 180°C (356°F).

On a baking sheet, spread a layer of grated mozzarella cheese.

Arrange the thinly sliced potatoes on top of the cheese. Season with salt and drizzle with vegetable oil.

Bake in the preheated oven for 30 minutes.

Cook the Meat Filling: While the potatoes are baking, heat some vegetable oil in a pan over medium heat.

Add the sliced onion and cook until soft.

Add the minced meat to the pan and cook for about 10 minutes, breaking up any lumps with a spatula.

Mix in the minced garlic and chopped bell peppers. Cook for 5 more minutes, allowing the flavors to meld.

Stir in the tomato paste, tomato sauce, salt, pepper, ground cumin, and thyme. Cover the pan and let the mixture simmer for another 5 minutes.

Assemble the Roll: Remove the potatoes from the oven after 30 minutes and sprinkle with some more grated mozzarella.

Evenly spread the cooked meat mixture over the potatoes.

Carefully roll up the layered potatoes and meat into a roll, using the baking sheet to help if necessary.

Final Baking: Sprinkle the roll with additional cheese.

Bake the roll for another 15 minutes at 180°C until the cheese is bubbly and golden.

Serving: Sprinkle chopped parsley over the hot roll before serving.

Slice and serve warm.