My sister makes this classic side for every family picnic as the weather gets warm. It only takes 4 ingredients and is the most refreshing savory bite.

This 4-ingredient Italian pasta salad is the kind of classic side my sister brings to every family picnic once the weather starts to warm up. It’s simple, bright, and so refreshing—just tender tricolor rotini, juicy cherry tomatoes, creamy mozzarella pearls, and a zesty Italian dressing that ties it all together. There’s nothing fussy or fancy here, just a make-ahead crowd-pleaser that travels well in a plastic container and disappears fast from the potluck table.

Serve this pasta salad nicely chilled alongside grilled burgers, brats, or chicken, or tuck it next to sandwiches and chips for an easy weeknight dinner. It’s also a great addition to a picnic spread with fresh fruit, cut veggies, and a simple green salad. I like to keep it in the fridge for quick lunches—just scoop some into a bowl and add a little extra dressing if it’s been sitting. It’s sturdy enough to pack into lunchboxes or coolers for ball games and park days.

Servings: 6–8

12 oz (about 4 cups) dry tricolor rotini pasta

Cook the tricolor rotini according to the package directions in a large pot of well-salted boiling water until just al dente. This helps the pasta hold its shape and texture once dressed.

Drain the pasta in a colander and rinse under cold running water until the noodles are cool to the touch. Shake off as much excess water as you can so the dressing doesn’t get watered down.

Transfer the cooled, drained pasta to a large mixing bowl or directly into a plastic storage container if you’ll be taking it to a picnic.

Add the halved cherry tomatoes and the drained mozzarella pearls to the pasta.

Pour 3/4 cup of the zesty Italian dressing over the pasta mixture. Gently toss everything together until the pasta, tomatoes, and mozzarella are evenly coated and the colors look well mixed. If it seems a little dry, add the remaining dressing a tablespoon at a time.

Cover the bowl or snap the lid onto your plastic container and refrigerate for at least 30 minutes (an hour is even better) to let the flavors soak into the pasta and the salad chill through.

Before serving, give the salad a gentle toss. Taste and add a splash more Italian dressing if it has absorbed a lot in the fridge. Serve cold or slightly chilled, straight from the container.

For kids or picky eaters, you can slice the cherry tomatoes smaller or even use sweeter grape tomatoes so they’re less messy and more bite-sized. If your family doesn’t love raw tomatoes, you can swap them for roasted red peppers from a jar (drained well) while still keeping the recipe simple. For extra flavor without adding more main ingredients, choose an Italian dressing with herbs and a bit of tang, or sprinkle in a pinch of dried Italian seasoning, black pepper, or a little garlic powder if you like. To make this feel more like a main dish, you can stir in diced salami, pepperoni, or leftover grilled chicken—just remember that’s an add-on beyond the basic four ingredients. Food safety tips: Keep the salad refrigerated until serving, especially on hot days. If you’re taking it to a picnic, pack it in a well-chilled cooler and try not to let it sit out at room temperature for more than 2 hours (1 hour if it’s very hot outside). Because of the mozzarella and dressing, store leftovers in the fridge and enjoy within 3–4 days. Always use clean utensils when serving from the container so it stays fresh longer.