Heat the oil in a large frying pan and fry the diced capsicum over a high heat for 5 minutes. Reduce the heat, add the garlic and fry for a further 2 minutes. Stir in the pimenton and cook for 1 minute. Remove from heat and allow to cool.
Place the butter beans in a large bowl and mash roughly. Add the cooled capsicum mixture along with the tahini and white bread crumbs, season well and then combine thoroughly.
Divide mixture into eight balls and using wet hands, roll each into a sausage measuring about 10 centimeters / 4 inches long.
Clean the frying pan, pour in 1 centimeter / 1/2 inch of sunflower oil and place over a moderate heat. Add the sausages and cook for 10 minutes, turning frequently, until heated through and golden brown (you may need to do this in batches). Drain on kitchen paper. Serve with green beans.