California Spaghetti Salad combines long pasta strands with crisp cucumber, raw zucchini, sweet peppers, cherry tomatoes, red onion, and black olives. Italian dressing carries the seasoning through the bowl, with Parmesan and a few pantry spices mixed right into it. The result is a cold pasta salad with plenty of vegetables in each serving and enough contrast to keep a forkful interesting.
Give yourself time for the final chill. The salad needs at least three hours in the refrigerator after tossing, so boiling the pasta is only the beginning of the timeline. Chop the vegetables while the spaghetti cooks, mix the dressing separately, and use a bowl large enough to turn everything without spilling.
Two ingredient groups make this easier
For the salad, gather:
- 400–500 grams spaghetti, about 1 pound
- 1½ cups cherry tomatoes, halved
- 1 large cucumber, diced
- 2 small zucchini, diced
- 1 green bell pepper, diced
- 1 red bell pepper, diced
- 1 red onion, finely diced
- 1 (2.25-ounce) can sliced black olives, drained well
For the dressing, you will need:
- 1 (16-ounce) bottle Italian dressing, zesty preferred
- ½ cup grated Parmesan cheese
- 1 tablespoon sesame seeds
- 1 teaspoon paprika
- ½ teaspoon celery seeds
- ½ teaspoon garlic powder
The Parmesan belongs in the dressing, where it blends with the bottled vinaigrette and seasonings. Use grated cheese for that mixture. Drain the olives well so their packing liquid does not get added along with the dressing.
Cook the spaghetti for a cold salad
Bring a large pot of salted water to a rolling boil. Cook the spaghetti according to its package instructions. This recipe includes an extra one to two minutes so the noodles stay tender when chilled; taste as you approach the end so they are tender while still holding together.
Drain the pasta in a colander and rinse it immediately under cold running water. Turn the strands as you rinse so the middle of the pile cools too. Let the water drain away before moving the spaghetti into the mixing bowl. Extra rinse water can dilute the dressing.
The pasta should be cool before it meets the chopped vegetables. Gently loosen any strands that have settled together in the colander. There is no need to make a neat nest; loose strands are easier to turn through the salad.
Cut the vegetables with the pasta in mind
Halve the cherry tomatoes and dice the cucumber, zucchini, and both peppers into similar bite-size pieces. Finely dice the red onion so its flavor is spread throughout the bowl. The zucchini goes in raw, keeping its fresh bite alongside the cucumber and peppers.
Place the prepared vegetables and drained black olives in a very large mixing bowl. Use one with space above the ingredients for tossing. Long spaghetti needs room to move, especially once it starts winding around the vegetable pieces.
Small, fairly even vegetable pieces are easier to pick up with the noodles. The tomatoes can stay in halves, which gives the salad a different texture from the diced vegetables. Keep the olive rings whole enough to see and distribute them across the bowl.
Whisk the seasoning into the dressing first
In a smaller bowl, combine the Italian dressing, grated Parmesan, sesame seeds, paprika, celery seeds, and garlic powder. Adding everything here makes it easier to spread the seasoning evenly when you dress the salad.
Whisk vigorously until the spices and grated cheese are incorporated. Scrape around the bottom of the bowl, where paprika and garlic powder can collect. The mixture will be a seasoned vinaigrette with visible seeds and Parmesan, ready to coat the pasta.
Zesty Italian dressing gives this version its stronger seasoning. Regular Italian dressing is also an option. Use the full 16-ounce bottle for these quantities so the vegetables and pasta are dressed throughout.
Toss from the bottom of the bowl
Add the cooled spaghetti to the bowl of vegetables. Gently loosen the strands as you move them into the bowl so they are easy to turn through the chopped pieces.
Pour the prepared dressing over the pasta, reaching across the surface. Use kitchen tongs to lift and turn the strands, bringing vegetables up from the bottom as you work. Keep tossing until everything is coated and distributed. Pause to check underneath the pasta, where olives and diced pieces can collect.
Chill, then toss once more before serving
Cover the bowl with a lid or plastic wrap and refrigerate for at least three hours. This is part of the recipe, giving the pasta and vegetables time with the seasoned dressing. Allow the full chill after the salad has been combined.
Before serving, toss it again to redistribute any dressing that has settled at the bottom. Lift both pasta and vegetables into each portion. The yield in the card is an estimate of twelve generous side servings; the exact number depends on how much you put on each plate.
Serve it as the cold side with a simple main dish, or add it to a table of salads. A wide bowl makes it easier to reach the vegetables along with the noodles. Keep the loose, tossed arrangement instead of trying to shape each portion into a tight bundle.
California spaghetti salad questions
Does the zucchini need to be cooked?
No. Dice the zucchini and add it with the other raw vegetables. The only ingredient cooked in this method is the spaghetti.
Where does the Parmesan go?
Whisk the half cup of grated Parmesan into the Italian dressing with the seeds and spices. It is part of the dressing mixture rather than a separate layer of cheese.
Why rinse the pasta?
The cold rinse cools the spaghetti and removes excess starch. Drain it thoroughly afterward so the dressing coats the noodles without being watered down.
Can I serve it as soon as it is mixed?
Follow the three-hour minimum chill in the recipe before serving. Give the bowl another toss at the end so the dressing and vegetables are distributed again.
California Spaghetti Salad
Equipment
- Large pot and colander
- Very large mixing bowl
- Small bowl and whisk
- Kitchen tongs
Ingredients
For the salad
- 400-500 g spaghetti about 1 pound
- 1 ½ cups Cherry tomatoes halved
- 1 large Cucumber diced
- 2 small Zucchini diced
- 1 Green bell pepper diced
- 1 Red bell pepper diced
- 1 Red onion finely diced
- 1 2.25-ounce can sliced black olives drained well
For the dressing
- 1 16-ounce bottle Italian dressing zesty preferred
- ½ cup Grated Parmesan cheese
- 1 tablespoon Sesame seeds
- 1 teaspoon Paprika
- ½ teaspoon Celery seeds
- ½ teaspoon Garlic powder
Instructions
- Bring a large pot of heavily salted water to a rolling boil. Cook the spaghetti according to the package instructions, adding 1-2 extra minutes so the pasta remains tender when chilled.
- Drain the cooked pasta in a colander and immediately rinse it under cold running water to stop the cooking process and remove excess starch. Set aside.
- While the pasta boils, prepare your vegetables. Add the diced zucchini, halved cherry tomatoes, green and red bell peppers, red onion, cucumber, and drained black olives to a very large mixing bowl.
- In a separate, smaller bowl, combine the bottle of Italian dressing, grated Parmesan cheese, sesame seeds, paprika, celery seeds, and garlic powder. Whisk vigorously until the spices are fully incorporated.
- Add the cooled spaghetti to the large bowl with the chopped vegetables. Pour the seasoned dressing mixture over the top. Use kitchen tongs to toss everything together until the pasta and vegetables are evenly coated.
- Cover the bowl tightly with plastic wrap or a lid. Place in the refrigerator to marinate for at least 3 hours before serving. Give it a quick toss right before serving to redistribute the dressing. Enjoy!
Notes
- Yield is an estimate of 12 generous side servings and depends on portion size.
- Prep and pasta cooking times are estimates. Follow your spaghetti package directions and check the pasta as it cooks.
- The total includes the minimum 3-hour chill.
- Drain the rinsed spaghetti and canned olives thoroughly before mixing.
- The zucchini goes into the salad raw.
- Grated Parmesan is whisked into the dressing, and the salad is tossed again before serving.
More cold salads to try
For a creamy seafood option, try Crab Seafood Salad. For a vegetable side with cucumber, onion, and tomato, see Marinated Cucumbers, Onions and Tomatoes.