Cucumber Pasta Salad is a cool, creamy, beginner-friendly side dish with tender penne, crisp cucumber, mellow onion, and a tangy dill dressing that tastes even better after chilling.
This is the kind of chilled pasta salad you want ready in the fridge before a cookout, picnic, weekday lunch, or simple summer dinner. It is creamy without feeling heavy, crisp without being watery, and bright enough to balance richer grilled mains.
The combination is simple but dependable: pasta gives the salad body, cucumber adds freshness, onion brings gentle bite, and the dill dressing ties everything together with a tangy, lightly sweet finish. Letting it rest before serving is what makes the flavor feel complete instead of just mixed.
If you like make-ahead side dishes, this one is especially useful. You can cook the pasta, blend the dressing, prep the vegetables, and let the bowl chill while you focus on the rest of the meal. By the time it reaches the table, the pasta has soaked up just enough dressing to taste seasoned all the way through.
Cucumber Pasta Salad Ingredients
Penne pasta gives the salad a sturdy base and holds the creamy dressing well in its ridges and hollow center.
English cucumber adds a crisp, cool bite with fewer seeds and a thinner skin than regular cucumbers.
White onion brings a mild sharpness that keeps the salad from tasting flat, especially after a quick soak in cold water.
Mayonnaise creates the creamy base of the dressing and helps it cling to the pasta.
Sour cream adds tang and softens the richness of the mayonnaise for a smoother, fresher finish.
Fresh dill gives the salad its signature herby flavor and pairs naturally with cucumber.
Vinegar brightens the dressing and balances the creamy ingredients.
Sugar rounds out the tanginess without making the salad taste sweet.
Salt and black pepper season the dressing and help bring out the flavor of the pasta and vegetables.
Step-by-Step Cucumber Pasta Salad
STEP 1: Stir together the mayonnaise, sour cream, vinegar, sugar, chopped dill, salt, and black pepper in a small bowl. Mix until the dressing looks smooth and evenly blended, then set it aside so the dill and tangy ingredients can settle together.
STEP 2: Prepare the onion by slicing or mincing it finely, then place it in a bowl of cold water. Let it sit while you cook the pasta. This simple step softens the onion’s stronger bite while keeping the texture crisp.
STEP 3: Cook the penne in salted water according to the package directions until it is al dente. Avoid overcooking it, because soft pasta can break apart once it is tossed with the dressing and chilled.
STEP 4: Drain the pasta, rinse it under cold running water, and let it drain very well. Cooling the pasta quickly stops the cooking process and helps keep the salad refreshing instead of warm and sticky.
STEP 5: Slice the cucumber lengthwise and scoop out the watery seeds with a spoon. Cut the cucumber into small pieces or thin slices, depending on the texture you like. Removing the seeds helps the finished salad stay creamy instead of watery.
STEP 6: Add the cooled pasta, drained onion, and prepared cucumber to a large mixing bowl. Pour the dill dressing over the top and toss gently until every piece of pasta and cucumber is coated.
STEP 7: Cover the bowl and chill the salad for at least 40 minutes before serving. Give it one more gentle stir just before bringing it to the table so the dressing is evenly distributed.
Can I make this ahead of time?
Yes, this salad is made for chilling. You can prepare it several hours ahead, cover it tightly, and keep it in the refrigerator until serving. For the freshest texture, stir it before serving and add a small spoonful of mayonnaise or sour cream if it needs loosening.
How do I keep cucumber pasta salad from getting watery?
Use an English cucumber, scoop out the seeds, and drain the pasta thoroughly after rinsing. The cucumber seeds and trapped pasta water are the most common reasons a creamy pasta salad becomes thin after resting.
Helpful Tips
- Cook the pasta just to al dente so it stays firm after chilling and tossing with the creamy dressing.
- Let the onion soak in cold water while the pasta cooks to keep the flavor mild and balanced.
- Chill the salad before serving, because the resting time helps the dressing season the pasta and mellow the vegetables.
What to Serve with Cucumber Pasta Salad
This creamy cucumber pasta salad is a natural fit for warm-weather meals because it tastes cool, fresh, and satisfying without needing to be served hot. It works well beside grilled chicken, burgers, baked chicken, or simple sandwiches when you want a side dish that feels more filling than a plain green salad.
For a cookout plate, serve it with corn on the cob and a crisp lettuce salad. The creamy pasta, sweet corn, and fresh greens give you a balanced mix of textures without making the meal feel complicated.
For lunch, pair it with turkey sandwiches, chicken wraps, or a bowl of tomato soup. The dill and cucumber bring a refreshing contrast that makes simple meals feel more complete.
For a picnic or potluck, serve it alongside deviled eggs, fresh fruit, or a crunchy slaw. Since it is creamy, keep the bowl chilled until serving and return leftovers to the refrigerator promptly.
Can I use another pasta shape?
Yes, short pasta shapes work well here. Rotini, shells, bow ties, or elbow macaroni can replace penne. Choose a shape with enough texture to hold the dressing, and cook it just until al dente so it keeps its structure.
Can I use dried dill instead of fresh dill?
Fresh dill gives the brightest flavor, but dried dill can work in a pinch. Use a smaller amount because dried herbs are more concentrated, then let the dressing rest a little longer so the flavor has time to soften and spread through the salad.
How to Store & Reheat
Store leftovers in an airtight container in the refrigerator for up to 3 days. Because this salad contains a creamy dressing, keep it chilled and avoid leaving it at room temperature for long periods, especially during warm weather.
This pasta salad is not a good freezer recipe. The cucumber will lose its crisp texture, and the creamy dressing can separate after thawing. For the best result, make only what you plan to enjoy within a few days.
There is no need to reheat this dish because it is meant to be served cold. If the salad thickens after chilling, stir it gently and refresh it with a small spoonful of sour cream, mayonnaise, or a tiny splash of vinegar, depending on whether you want it creamier or tangier.
Before serving leftovers, taste and adjust the seasoning. Cold pasta can mellow in the fridge, so a pinch of salt, a little black pepper, or a sprinkle of fresh dill can bring the flavors back to life.
Cucumber Pasta Salad
Ingredients
For the Pasta Salad
- 1 English cucumber cut into ¼-inch pieces
- 8 oz penne pasta
- 1/2 white onion finely minced
For the Dressing
- 2 tbsp finely chopped fresh dill
- 1/2 cup full-fat sour cream
- Freshly ground black pepper added to taste
- 1/2 tsp salt
- 2 tbsp vinegar
- 1 tsp sugar
- 1/2 cup mayonnaise Hellmann’s preferred
Instructions
- Combine the mayonnaise, sour cream, vinegar, sugar, fresh dill, salt, and black pepper in a small mixing bowl. Stir thoroughly until the dressing is smooth and evenly blended.
- Set the prepared dressing aside so the ingredients have time to meld while the remaining components are prepared.
- Thinly slice the white onion and place it in a bowl filled with cold water. Letting the onion rest in the water helps soften its sharper flavor.
- Cook the penne until al dente, following the directions on the package. After cooking, rinse the pasta under cold running water to stop the cooking process and cool it completely.
- Drain the pasta well, then set it aside until ready to assemble the salad.
- Cut the cucumber in half lengthwise. Scoop out the seeds with a spoon, then slice the cucumber thinly for a crisp, refreshing texture.
- Place the cooled pasta, prepared onion, cucumber, and any additional desired ingredients into a large bowl.
- Pour the dressing over the salad mixture and toss until the pasta and vegetables are evenly coated.
- Let the salad rest for at least 40 minutes before serving so the dressing can fully season the pasta and vegetables.