Onion peel and cut into slices.

Peeled potatoes and tomatoes also cut into slices.

Flat dish for baking grease with oil, put a layer of onions on top, alternating, put tomatoes with potatoes, drizzle with oil, pour water, add salt and pepper and sprinkle with cheese.

On top lay a layer of onions, layer potatoes, tomatoes, salt, pepper, drizzle with oil and sprinkle with cheese. Top the last layer to lay out greens and put in a preheated 180 degree oven.

Bake the casserole for 1 hour or until until the potatoes are tender and browned. If the potatoes are hard inside and from the outside begins to burn, the shape can cover with foil and continue to bake until fully cooked. Serve the baked potatoes with tomatoes in the form of heat and garnish with herbs.