Crunchy Cucumber Pasta Salad

Finding a cool, refreshing side dish for summer potlucks and barbecues can feel like an impossible task. After all, you want something that won’t wilt in the heat, tastes great after sitting out for a bit, and actually gets people coming back for seconds instead of just filling space on their plate.

That’s where this cucumber pasta salad comes in handy: it’s crisp and creamy, comes together in under 30 minutes, and works perfectly whether you’re feeding a crowd at a backyard cookout or just need a quick lunch option for the week ahead.

What Kind of Cucumber Should I Use?

This recipe calls for English cucumber, which is a great choice because it has fewer seeds and a thinner skin than regular cucumbers. You don’t even need to peel it, which saves you time and keeps some extra nutrients in your salad. If you can’t find English cucumber at the store, regular cucumbers work just fine – you’ll just want to scoop out the seeds with a spoon and maybe peel them if the skin seems thick or waxy. Persian cucumbers are another good option since they’re also thin-skinned and have a nice crunch, though you’ll need a few more of them to equal the same amount.

Options for Substitutions

This pasta salad is pretty forgiving when it comes to swaps:

• English cucumber: Regular cucumbers work fine here – just peel them and scoop out the seeds with a spoon before chopping. You’ll need about 1 to 2 regular cucumbers to equal one English cucumber.
• Medium pasta: Penne and rotini are great choices, but feel free to use farfalle, shells, or even elbow macaroni. Just stick with a pasta shape that has nooks and crannies to hold onto the creamy dressing.
• Sour cream and mayonnaise: You can use all mayo or all sour cream if that’s what you have – just use 1 cup total. Greek yogurt also works as a lighter substitute for either one.
• Fresh dill: If you don’t have fresh dill, use 2 teaspoons of dried dill instead. You could also try fresh parsley or chives for a different flavor profile.
• White vinegar: Apple cider vinegar or rice vinegar both work well in place of white vinegar and add a slightly milder tang.
• Sweet onion: Red onion or regular yellow onion can replace sweet onion. If using a sharper onion, soak the chopped pieces in cold water for 10 minutes first to mellow out the bite.

Watch Out for These Mistakes While Cooking

The biggest mistake with pasta salad is not rinsing your cooked pasta with cold water, which stops the cooking process and prevents the noodles from getting mushy and clumping together.

Overcooking your pasta is another common issue – aim for al dente since the pasta will continue to soften as it sits in the dressing, and nobody wants a bowl of mush.

Skipping the step of soaking your sliced onions in cold water can leave your salad with a harsh, overpowering bite, so give them at least 10 minutes in ice water to mellow out the flavor.

Finally, don’t skip the resting time after mixing everything together – those 40 minutes allow the flavors to blend and the pasta to absorb the creamy dressing, making each bite taste way better than if you served it right away.

What to Serve With Cucumber Pasta Salad?

This cool and creamy pasta salad is perfect for summer cookouts and pairs beautifully with just about any grilled protein. I love serving it alongside grilled chicken, burgers, or hot dogs at backyard barbecues since the refreshing cucumber helps balance out those smoky, rich flavors. It also works great as a side dish for pulled pork sandwiches or grilled salmon if you’re looking for something a bit different. For a complete picnic spread, round out your meal with some corn on the cob, watermelon slices, or a simple fruit salad.

Storage Instructions

Store: This pasta salad actually tastes better the next day after all the flavors have had time to mingle! Keep it in an airtight container in the fridge for up to 3 days. You might notice the cucumbers release a bit of water as it sits, so just give it a good stir before serving.

Make Ahead: I love making this the night before a picnic or potluck. Just prepare everything as directed and let it chill overnight. If you’re planning more than a day ahead, you can cook the pasta and make the dressing separately, then toss everything together a few hours before serving for the freshest taste.

Serve: This salad is meant to be enjoyed cold, so pull it straight from the fridge when you’re ready to eat. If it seems a little dry after sitting, just stir in a tablespoon or two of mayo or sour cream to freshen it up.

Estimated Nutrition

Estimated nutrition for the whole recipe (without optional ingredients):

• Calories: 1300-1450
• Protein: 24-28 g
• Fat: 80-90 g
• Carbohydrates: 120-135 g

Ingredients

For the salad:

• 1 large cucumber (halved lengthwise, deseeded, and sliced)
• 0.5 lb rotini pasta (cooked al dente)
• 1/2 medium red onion (thinly sliced and soaked)

For the dressing:

• 1/2 cup sour cream
• 1/2 cup mayonnaise
• 1 tsp sugar
• 3/4 tsp salt
• 3 tbsp fresh dill (finely minced)
• 2 1/2 tbsp white vinegar
• 1/2 tsp black pepper
• 1/2 tsp garlic powder
• 1 tsp lemon zest

Step 1: Prepare the Pasta and Vegetables

• 0.5 lb rotini pasta
• 1 large cucumber
• 1/2 medium red onion

Bring a pot of salted water to a boil and cook the rotini pasta until al dente according to package directions, then drain and rinse thoroughly with cold water to stop the cooking and remove excess starch.

While the pasta cooks, halve the cucumber lengthwise, use a spoon to scoop out and discard the seeds, then slice into half-moons.

Thinly slice the red onion and immediately submerge it in a bowl of cold water—this mellows its sharp bite and makes it crisper.

Set all prepared vegetables aside.

Step 2: Build the Creamy Dressing

• 1/2 cup sour cream
• 1/2 cup mayonnaise
• 2 1/2 tbsp white vinegar
• 1 tsp sugar
• 3/4 tsp salt
• 1/2 tsp black pepper
• 1/2 tsp garlic powder
• 1 tsp lemon zest
• 3 tbsp fresh dill

In a medium bowl, whisk together the sour cream, mayonnaise, white vinegar, sugar, salt, black pepper, and garlic powder until smooth and well combined.

I like to add the lemon zest at this point so it infuses into the dressing and becomes more aromatic.

Fold in the fresh dill gently to preserve its texture and vibrant color.

Taste and adjust seasoning if needed—the dressing should be tangy, slightly sweet, and herbaceous.

Step 3: Assemble and Rest the Salad

• cooked pasta from Step 1
• sliced cucumber from Step 1
• soaked red onion from Step 1
• creamy dressing from Step 2

Drain the soaked red onion well and add it to a large serving bowl along with the cooked pasta from Step 1 and the sliced cucumber.

Pour the creamy dressing from Step 2 over everything and gently toss until all components are evenly coated.

I’ve found that letting this salad sit for 30–40 minutes before serving allows the flavors to meld and the pasta to absorb the dressing, creating a more cohesive dish.

Cover and refrigerate until ready to serve, stirring occasionally if you’re checking on it.

Crunchy Cucumber Pasta Salad

Delicious Crunchy Cucumber Pasta Salad recipe with step-by-step instructions.

Print Recipe Pin Recipe

Prep Time 15 minutes mins

Cook Time 30 minutes mins

Total Time 45 minutes mins

Servings 8 servings

Calories 1375 kcal

Ingredients

  

For the salad:

• 1 large cucumber (halved lengthwise, deseeded, and sliced)
• 0.5 lb rotini pasta (cooked al dente)
• 1/2 medium red onion (thinly sliced and soaked)

For the dressing:

• 1/2 cup sour cream
• 1/2 cup mayonnaise
• 1 tsp sugar
• 3/4 tsp salt
• 3 tbsp fresh dill (finely minced)
• 2 1/2 tbsp white vinegar
• 1/2 tsp black pepper
• 1/2 tsp garlic powder
• 1 tsp lemon zest

Instructions

 

• Bring a pot of salted water to a boil and cook the rotini pasta until al dente according to package directions, then drain and rinse thoroughly with cold water to stop the cooking and remove excess starch. While the pasta cooks, halve the cucumber lengthwise, use a spoon to scoop out and discard the seeds, then slice into half-moons. Thinly slice the red onion and immediately submerge it in a bowl of cold water—this mellows its sharp bite and makes it crisper. Set all prepared vegetables aside.
• In a medium bowl, whisk together the sour cream, mayonnaise, white vinegar, sugar, salt, black pepper, and garlic powder until smooth and well combined. I like to add the lemon zest at this point so it infuses into the dressing and becomes more aromatic. Fold in the fresh dill gently to preserve its texture and vibrant color. Taste and adjust seasoning if needed—the dressing should be tangy, slightly sweet, and herbaceous.
• Drain the soaked red onion well and add it to a large serving bowl along with the cooked pasta from Step 1 and the sliced cucumber. Pour the creamy dressing from Step 2 over everything and gently toss until all components are evenly coated. I've found that letting this salad sit for 30–40 minutes before serving allows the flavors to meld and the pasta to absorb the dressing, creating a more cohesive dish. Cover and refrigerate until ready to serve, stirring occasionally if you're checking on it.