This is a no-cook-except-the-pasta summer salad built around fresh tomatoes, zucchini, and onion, dressed with red wine vinegar and olive oil, then topped with mozzarella, avocado, and pine nuts. It comes together in 30 minutes and uses the kind of produce thatโs cheap and plentiful mid-summer. The dressing is already in the bowl โ no separate jar to shake up.
The short version of why this works
Two things make this salad land well. First, the vegetables get tossed with salt and red wine vinegar before the pasta goes in. That brief contact draws out a little moisture from the tomatoes and onion, which mixes with the vinegar to form a light, flavor-packed liquid that coats the pasta instead of sliding off it. Second, the mustard โ just one teaspoon โ acts as an emulsifier when you add the olive oil, helping the dressing stay cohesive rather than pooling at the bottom of the bowl. Neither step takes extra time; both make a real difference in how the finished salad tastes.
About the ingredients
- Zucchini: The recipe calls for a mandolin, which gives thin, even slices that stay tender without turning mushy. If you donโt have one, a sharp knife and thin slicing works fine โ just aim for slices under ยผ inch.
- Pine nuts: These are the priciest item on the list. Roughly chopped walnuts or sunflower seeds are straightforward swaps that keep the crunch without the cost.
- Mozzarella: Fresh mozzarella torn into pieces is ideal, but low-moisture mozzarella diced small works and holds up better if the salad sits for any length of time.
- Avocado: Add it last, right before serving. It doesnโt store well once cut and will brown and soften quickly if mixed in early.
- Pasta shape: The recipe doesnโt specify a shape. Short, sturdy shapes โ rotini, penne, farfalle โ catch the dressing better than long noodles.
Troubleshooting
- Salad tastes flat: The tomatoes vary a lot in sweetness and acidity depending on the variety and ripeness. Taste after tossing the vegetables and adjust โ a pinch more salt or a small splash more vinegar usually fixes it before the pasta even goes in.
- Pasta clumps together: If youโre not mixing the pasta in immediately after cooking, toss it with a small drizzle of olive oil while itโs still warm to keep it from sticking into a solid mass.
- Dressing is too sharp: If the red wine vinegar tastes harsh, let the dressed vegetables sit for five minutes before adding the pasta โ the salt softens the raw edge of the vinegar noticeably.
- Watery bowl after sitting: Tomatoes continue releasing liquid over time. If youโre serving this at a gathering, dress it at the table โ a pre-dressed salad goes limp fast. Keep the tossed vegetables separate from the pasta until the last moment.
- Onion flavor is too strong: Soak the sliced onion in cold water for 10 minutes, then drain and pat dry before adding. This takes the sharp bite down without losing the onion flavor entirely.
Storage and make-ahead
The vegetable and pasta base keeps in an airtight container in the fridge for up to 2 days. Store the avocado and mozzarella separately and add them when youโre ready to eat โ avocado browns within a few hours once cut, and fresh mozzarella releases water that dilutes the dressing. Pine nuts can be portioned out ahead and kept at room temperature. If the salad has been chilled, pull it out 10 minutes before serving; cold mutes the flavor of the tomatoes and the vinegar dressing. A quick stir and a small drizzle of fresh olive oil will revive it if it looks dry after refrigerating.
Easy Summer Tomato Pasta Salad
Equipment
- Large mixing bowl
- Mandoline slicer
- Large pot for boiling pasta
- Colander
- Sharp Chefโs Knife
- Cutting board
Ingredients
Salad Ingredients
- ยฝ medium red onion about 3 oz / 85g, thinly sliced
- 2-3 medium ripe tomatoes about 12 oz / 340g, diced
- ยฝ medium zucchini about 4 oz / 115g, thinly sliced on a mandoline
- ยผ teaspoon fine sea salt
- 1 tablespoon red wine vinegar
- 1 teaspoon Dijon mustard
- 8 oz short pasta 225g, rotini, penne, or farfalle โ cooked according to package directions and drained
- 3 tablespoons extra-virgin olive oil or flax oil
Topping Ingredients
- 4 oz fresh mozzarella 115g, torn into bite-sized pieces (or cheese of choice)
- 1 medium ripe avocado diced
- โ cup pine nuts about 1.5 oz / 45g, lightly toasted
- 2 tablespoons fresh basil leaves torn (or flat-leaf parsley)
Instructions
- In a large mixing bowl, combine the sliced onion, diced tomatoes, and sliced zucchini. Sprinkle with the salt and red wine vinegar, then toss gently. Let the vegetables sit for 5โ10 minutes while you cook the pasta โ this draws out their juices and creates a natural dressing.ยฝ medium red onion, 2-3 medium ripe tomatoes, ยฝ medium zucchini, ยผ teaspoon fine sea salt, 1 tablespoon red wine vinegar
- Add the Dijon mustard to the macerated vegetables and stir to combine. Drizzle in the olive oil and toss until the dressing looks cohesive. Add the cooked, drained pasta (slightly warm or at room temperature) and toss until every piece is well coated.1 teaspoon Dijon mustard, 3 tablespoons extra-virgin olive oil, 8 oz short pasta
- Top with torn mozzarella, diced avocado, toasted pine nuts, and fresh basil. Toss gently one more time or leave the toppings arranged on top for presentation.4 oz fresh mozzarella, 1 medium ripe avocado, โ cup pine nuts, 2 tablespoons fresh basil leaves
- Serve immediately at room temperature for the best flavour. If you prefer a chilled salad, refrigerate for 20โ30 minutes, then pull it out 10 minutes before eating โ cold mutes the tomato and vinegar flavours. Add a small drizzle of fresh olive oil and toss if the salad looks dry.
Notes
Nutrition
Common questions
Can I make this salad ahead for a party?
Yes, but keep the components separate until close to serving. Toss the vegetables and pasta together up to a day ahead, then add the avocado, mozzarella, and pine nuts right before people eat.
What pasta shape works best here?
Short, sturdy shapes like rotini, penne, or farfalle work best. They hold the dressing in their ridges and curves better than spaghetti or other long noodles.
Can I use cherry tomatoes instead of medium tomatoes?
Yes โ halved cherry tomatoes work well and often have more consistent flavor than large tomatoes out of season. Use about 1ยฝ to 2 cups halved to replace the 3 medium tomatoes.
Is there a substitute for red wine vinegar?
White wine vinegar is the closest swap and works seamlessly. Apple cider vinegar is slightly sweeter and also works; plain white vinegar is sharper, so use a little less.
The recipe serves 2 โ how do I scale it up for a crowd?
It scales straightforwardly: just multiply all ingredients by the number of servings needed. Keep in mind that at larger volumes, the tomatoes release more liquid, so taste and adjust the salt and vinegar after tossing.
Can I skip the mustard if I donโt have any?
You can, but the dressing will be less cohesive โ the oil and vinegar will separate faster. A small spoonful of mayonnaise or even a pinch of honey can stand in as an emulsifier if needed.