Chopped liver found in health food stores usually has eggs, while this is vegan. It tastes great on rye vegan bread with mustard. It can also be a dip. here goes;
Boil lentils as usual, while browning chopped onions in olive oil. Drain cooked lentils and mash with a potato masher (can be pureed in a food processor as well). Add onions, salt and pepper to taste. Add more olive oil if not moist enough. Let chill.