In a large skillet over high heat, brown the chicken livers in 1 tbsp of the butter. Add the broth, Marsala, anchovies, green onion and capers. Bring to a boil and cook for about 2 minutes or until the livers are pink in the centre. With a slotted spoon, remove the livers and place in a food processor. Let the broth reduce until almost dry and pour over the livers.