1 lb. thin spaghetti or vermicelli, cooked and rinsed
1 sm. Spanish onion (optional)
3 med. tomatoes, cut into sm. chunks
3 cucumbers, halved, quartered and diced
1 (16 oz.) zesty Italian dressing
1 (2.75 oz.) bottle McCormick Salad Supreme (DO NOT SUBSTITUTE)

Mix all ingredients while spaghetti is still warm. Refrigerate overnight if possible. Will keep for a long time refrigerated.