Halve the avocados, remove the seeds, remove the flesh from the skin and cut into pieces. Peel onion and garlic, dice very finely and fry in hot oil. Add the avocado flesh and steam briefly.
Pour on lemon juice and puree with the cutting stick of the hand mixer. Add stock and cream, heat up briefly. Do not boil any more. Season soup with salt and pepper. Lightly roast pine nuts in a pan without fat.
Clean, wash and quarter the tomatoes, remove the seeds. Cut tomatoes into small cubes. Wash basil, cut into strips. Serve the soup sprinkled with pine nuts, diced tomatoes, basil and coloured pepper.