Prepare the potatoes

• Peel the potatoes and slice them into thin, even rounds.
• Pat the slices dry and season with salt and pepper.

Make the meat sauce

• Heat the olive oil in a frying pan and soften the onion and garlic.
• Add the ground beef and brown it well.
• Pour in the tomato sauce, add the oregano and simmer until slightly thickened.

Layer the lasagna

• Spread a little meat sauce in the baking dish.
• Alternate layers of potato slices, meat sauce, mozzarella and parmesan.
• Finish with a generous layer of cheese on top.

Bake

• Cover with foil and bake until the potatoes are tender.
• Remove the foil and bake until the top is golden and bubbling.

Rest and serve

• Let the lasagna rest before slicing so the layers hold together.