400 g potatoes
300 g beans / runner beans
200 g Valtellina Casera PDO cheese
150 g butter
salt and pepper
Peel the potatoes and boil together with the beans / runner beans. Cook until soft and then drain. Mash together with a wooden spoon to give a coarse purée. Season with salt and pepper. Soften the onion in the butter and add, together with the cheese.