1. In a food processor, puree the beans, half the onion, jalapeno, pepper, cumin, chili powder, half the lime juice, garlic and half the salt until smooth. 2. Scrape into a bowl and add avocado, tomato, remaining onion and remaining lime juice. 3. Fold vegetables in well, then taste and add salt if needed. 4. Place phyllo shells on a tray and fill each with the guacamole mixture. 5. Cover with plastic wrap and store in the fridge until ready to serve