1Preheat your oven to 375°F (190°C).
Peel and slice the 4 medium potatoes into thin rounds.
Peel and thinly slice the large onion.
In a baking dish, layer the potato slices and onion slices.
Pour the can of tomatoes over the layered potatoes and onions.
Halve the cherry tomatoes and scatter them over the top.
Drizzle 2 tablespoons of olive oil over the dish.
Sprinkle 1 teaspoon of salt and 1 teaspoon of black pepper evenly over the top.
Cover the dish with aluminum foil and bake in the preheated oven for 45 minutes.
Remove the foil and place the 4 slices of cheese on top of the bake.
Return the dish to the oven and bake for an additional 15 minutes, or until the cheese is melted and bubbly.
Remove from the oven and let it cool for a few minutes before serving.