Cook bowtie pasta in a large pot of boiling, salted water according to package directions. The last 3 to 5 minutes of cooking time, add the green beans. Drain in colander.
In large bowl combine pasta, green beans, tomatoes and chopped parsley and/or herbs. Fold in a few turns of olive oil. (Add more to taste.) Sprinkle in the Hidden Valley Ranch packet and sunflower seeds. Serve or refrigerate for later.