Heat a small prying pan or small pot over medium heat.
Add 1 tbsp olive oil and lower heat to medium low.
Add onions and gently stir for 2 minutes, until onions are translucent.
Add garlic and gently stir for 1 minute. Then remove from heat and set aside.
Add, to a food processor, the beans, tomato paste, sautéed garlic and onion mixture, lemon juice, salt, pepper, 1 tablespoon of olive oil and 1 tablespoon of water, and blend until smooth or to your desired texture.
Note 1: You may need to occasionally stop blending, open the lid and use a spatula to move the mixture from the sides to the center to get a more even blend.
Note 2: Add another tablespoon of water if the mixture is too stiff.
Add scallions and cilantro or parsley, and blend or pulse until herbs are evenly distributed.
If needed, adjust to your desired taste by adding a little more lemon juice, salt and pepper.