Peel and grate the potatoes. Soak in cold water and press them to remove excess starch.

In a pan, heat olive oil, sauté the diced onion for 2 minutes, then add the sweet pepper. Cook for 5 minutes, season with salt and pepper, and set aside.

Drain the grated potatoes and squeeze out excess water. In a large bowl, combine the potatoes with eggs, salt, pepper, paprika, and oregano.

Grease a casserole dish with olive oil, press the potato mixture into the dish, and top with sautéed vegetables.

Divide into 6 squares using a spatula and sprinkle grated cheese on top.

Bake at 180°C (356°F) for 50 minutes. Let cool slightly, slice, and serve.