Mix rice with tuna, peas, onions, celery, seasonings, and mayonnaise. Chill. Fill tomato petals with tuna mixture, if desired. (Cut out blossom ends of tomatoes and cut into sixths or eights - almost but not quite through to give a petal effect.) Arrange an salad greens if desired. Top with avocado, dressing.
Makes 8 servings.
Cajun Country -- New Iberia, Louisiana