Wash the tomatoes and cut them in half horizontally. Wash and dry the herbs, chop them finely together and mix with the grated cheese, tomato paste and breadcrumbs. Use more cheese than bread if the cheese is not very strongly flavoured, less if it’s very mature. Season to taste with salt and pepper.
Remove the seeds from the tomatoes. Arrange the 8 halves in an oiled ovenproof dish. Fi