Bean soaking time: 12 hours
Preparation time: 20 minutes
Cooking time: 2 hours and 20 minutes

Ingredients for 4 servings:
450 grams canned tuna in oil
200 grams of dry beans ("borlotti" kind)
20 grams grated parmesan cheese
80 grams grated gruyere cheese
40 grams butter
One teaspoon of oil
Two tablespoons bread-crumbs
A pinch of sodium bicarbonate
Salt
White pepper, just milled

Preparation

Place the beans in a bowl, cover them with warm water, add a pinch of bicarbonate of soda and let them stand for about 12 hours. Then drain them and rinse them under running water.

Cook them over medium heat for about two hours in a pot containing salted water and a teaspoon of oil. When the beans are cooked, drain them, put them through a vegetable mill into a bowl.

Mince the tuna in a food processor, place it in a bowl and add the grated cheeses and the mashed beans, keeping on the side a full tablespoon of gruyere cheese. Check for salt, butter a 2 cm high baking pan and cut the remaining butter into small pieces.

Distribute the mixture in the pan, level the surface, cover with the butter pieces, the remaining gruyere and the bread crumbs.

Place the pan in the preheated oven (180°C) and cook until the top turns a nice golden colour.

Enjoy!