Next, fry the onion some vegetable oil until soft, then add in the garlic and continue cooking until the onions are just beginning to color. Add on the tomato paste, give a good stir, then toss on the plantains, greens, and mix with the vegetable broth. Add salt to taste (locals recommend using lots of salt, since the plantains absorb quite a bit). Let simmer uncovered for about 30 minutes, or until the plantains are tender and no longer white. Then sprinkle on the crushed peanuts.