Baked Eggs with Tuna

First, finely chop the onion, garlic and pepper. Peel the eggs, cut them in half lengthwise and separate the yolks, keeping them in a bowl. Heat olive oil in a small pan and add the finely chopped vegetables to sauté. When the onion becomes translucent, drain the fat and add the tuna and the tomato puree. Stir everything and let it cool. Turn on the oven to 180°C. Once the mixture has cooled, mix everything with the yolks and stir until you get a mixture with which to fill the egg whites. Sprinkle with the cheese and bake until it turns pink. Serve warm.