Combine all the ingredients, except the crushed tomatoes, in a large bowl and mix well. Place three-quarters of the mixture in a food processor fitted with a steel blade and process for 5 seconds, creating a vegetable mash. Return the mash to the bowl, add the crushed tomatoes and blend well. Wrap the salsa tightly and chill for
at least 1 hour, allowing the flavors to blend together. If kept refrigerated, salsa will keep for about 7 days.