How to Make It
In a large saucepan, cover the beans generously with water. Add 1 garlic clove and bring to a boil. Cover partially and simmer over low heat until the beans are almost tender, about 1 hour and 45 minutes. Add 1 1/2 teaspoons of salt and simmer until the beans are tender, about 20 minutes longer. Measure out and reserve 1/4 cup of the bean cooking liquid.
Meanwhile, preheat the broiler. Flatten the red peppers with your hands and brush the skins with oil; arrange skin side up on a baking sheet. Broil 5 inches from the heat for about 8 minutes, or until the skins are blistered and charred in places.
Transfer the peppers to a plate and stack them to steam and cool. Remove the skins and slice the peppers lengthwise into 1-inch strips.
In a shallow bowl, pour the water over the bread and set aside for 5 minutes. Coarsely chop the 1 remaining garlic clove. In a food processor, combine the bread with the garlic, pine nuts, lemon juice, olive oil and 1/4 teaspoon salt. Add the reserved 1/4 cup of warm bean cooking liquid and puree until the sauce is smooth. Transfer to a serving bowl.
Drain the beans thoroughly. Add them to the sauce along with 2 tablespoons of the parsley; fold them into the sauce. Season with salt and pepper. Garnish with the red peppers, olives and the remaining 1 tablespoon of parsley and serve.