Best Creamy Cucumber Dill Salad with Red Onion Recipe

I brought this salad to a backyard cookout last July, fully expecting it to be a quiet side dish. You know the kind—the one people politely spoon onto their plates next to the burgers. Instead, a friend cornered me by the cooler, fork in hand, and asked if she could take the leftovers home. She wasn’t even asking for the recipe. She wanted the actual bowl. That’s when I realized this creamy cucumber dill salad with red onion had done something I didn’t expect.

It had become the thing people remembered.

Honestly, I almost didn’t bring it. The morning of the cookout, I was rushing around, chopping onions while my coffee got cold (again). I had made this salad a few times before, but it always felt too simple to be special. Cucumbers, dill, red onion, a creamy dressing—it’s not exactly flashy. But there’s something about the way the flavors sit together. The crunch of the cucumber, the sharp bite of the onion softened by the creaminess, the fresh dill cutting through everything like a cool breeze on a hot day.

It’s the kind of recipe you make without thinking, and then suddenly everyone’s asking about it.

I’ve been making this version for about three years now, tweaking it here and there. I tried it with Greek yogurt once (too tangy), with sour cream alone (too heavy), and finally landed on a mix that just works. It’s not revolutionary, but it is reliable. And honestly, that’s better than flashy most of the time.

So if you’re looking for a side dish that actually gets eaten—not just pushed around the plate—this creamy cucumber dill salad with red onion might surprise you. It surprised me.

Why You’ll Love This Recipe

I’ve tested this creamy cucumber dill salad with red onion at least a dozen times across different seasons and settings. Here’s why it keeps earning a permanent spot in my rotation:

• Quick & Easy : Comes together in about 15 minutes of active prep. No cooking required. Just slice, stir, and chill.
• Simple Ingredients : You probably already have cucumbers, dill, and red onion in your kitchen. The dressing uses pantry staples like sour cream, mayo, and vinegar.
• Perfect for Cookouts and Potlucks : This salad travels well, holds up for hours, and actually tastes better after sitting in the fridge for a bit. It’s my go-to for summer gatherings.
• Crowd-Pleaser : I’ve served this to kids who swear they hate onions and adults who claim they don’t like creamy salads. It somehow wins everyone over.
• Unbelievably Refreshing : The combination of cold, crunchy cucumber and fresh dill with that tangy cream dressing is pure comfort on a hot day.

What makes this version different from other cucumber salads is the dressing ratio. I spent a while getting the balance right—enough creaminess to coat each slice without drowning it, enough vinegar to cut through the richness, and just the right amount of dill to feel fresh without tasting like a pickle. It’s not too heavy, not too light. It’s just right.

This recipe isn’t just good. It’s the kind that makes you close your eyes after the first bite and remember why simple food can be the best food.

What Ingredients You Will Need

This creamy cucumber dill salad with red onion uses simple, fresh ingredients that come together to create something greater than the sum of their parts. Most of these are pantry or fridge staples, which makes this recipe perfect for last-minute meal planning.

For the Salad

• 2 large English cucumbers (or 3 medium Persian cucumbers) — English cucumbers have thinner skin and fewer seeds, which means less prep work. If using garden cucumbers, peel them first and scoop out the seeds.
• 1 medium red onion — Look for firm onions with tight, shiny skin. A slightly smaller onion works fine if you prefer less onion flavor.
• 3 tablespoons fresh dill, chopped — Fresh dill is non-negotiable here. Dried dill just doesn’t have the same bright, grassy flavor. I buy a bunch and use the rest in this dilly green beans recipe.
• 1 teaspoon salt — For drawing moisture out of the cucumbers. Use kosher salt or sea salt if you have it.

For the Creamy Dressing

• ½ cup sour cream — Full-fat sour cream gives the best texture, but light sour cream works in a pinch. I prefer Daisy brand for its thick, clean taste.
• ¼ cup mayonnaise — Use a good-quality mayo like Hellmann’s or Duke’s. This adds richness and helps the dressing cling to the cucumbers.
• 1 tablespoon white wine vinegar — Adds gentle acidity without overpowering the creaminess. Apple cider vinegar works as a substitute.
• 1 teaspoon sugar — Just a tiny bit to balance the vinegar and bring out the cucumber’s natural sweetness.
• ½ teaspoon garlic powder — Not fresh garlic, which can be too sharp. Garlic powder blends smoothly into the dressing.
• ¼ teaspoon black pepper — Freshly ground is best.

Optional Add-Ins

• Fresh chives or parsley — For extra color and mild onion flavor.
• A pinch of red pepper flakes — If you want a tiny kick of heat.

I’ve made this creamy cucumber dill salad with red onion with Greek yogurt instead of sour cream, and it works—but the texture is noticeably thinner. If you’re dairy-free, try a plain unsweetened coconut or oat yogurt mixed with a little extra mayo.

Equipment Needed

You don’t need much for this recipe, which is part of its charm. Here’s what I use:

• Sharp chef’s knife — A good knife makes slicing cucumbers and onions thin and even. I use a 8-inch Wüsthof, but any sharp knife will do.
• Cutting board — Preferably a large one so you have room to work.
• Large mixing bowl — For salting the cucumbers and mixing everything together.
• Small bowl or measuring cup — For whisking the dressing.
• Colander — To drain the salted cucumbers. A fine-mesh strainer works too.
• Whisk or fork — For mixing the dressing ingredients.
• Mandoline slicer (optional) — If you want perfectly uniform slices, a mandoline is great. But honestly, I usually just use a knife because it’s one less thing to wash.
• Covered container or bowl with plastic wrap — For chilling the salad before serving.

If you don’t have a colander, you can drain the cucumbers on paper towels. Just pat them dry gently before adding the dressing.

Preparation Method

Making this creamy cucumber dill salad with red onion is straightforward, but a few key steps make the difference between a watery, bland salad and a perfectly creamy, flavorful one. Follow these steps carefully.

Step 1: Prep the Cucumbers (5 minutes)

Wash your cucumbers thoroughly. If using English cucumbers, you can leave the skin on—it’s tender and adds nice color. Slice them about ⅛-inch thick. Too thin and they’ll get soggy. Too thick and they won’t absorb the dressing well. I aim for something between a coin and a cracker thickness.

Place the sliced cucumbers in a large bowl and sprinkle with 1 teaspoon of salt. Toss gently to coat. Let them sit for 10-15 minutes. This step draws out excess moisture so your salad doesn’t turn into a pool of water an hour later.

Step 2: Slice the Red Onion (3 minutes)

While the cucumbers are resting, slice your red onion as thinly as possible. I cut mine into half-rings. If you’re sensitive to raw onion’s bite, soak the slices in ice water for 5 minutes, then drain and pat dry. This mellows the sharpness without losing the crunch.

Step 3: Make the Dressing (3 minutes)

In a small bowl, whisk together the sour cream, mayonnaise, white wine vinegar, sugar, garlic powder, and black pepper. Taste it. The dressing should be tangy, creamy, and slightly sweet. Adjust the vinegar or sugar to your liking. I sometimes add an extra pinch of salt here if I’m feeling bold.

Step 4: Drain the Cucumbers (2 minutes)

After 10-15 minutes, you’ll notice liquid pooling at the bottom of the bowl. Pour the cucumbers into a colander and rinse them briefly with cold water to remove excess salt. Shake the colander well, then pat the cucumbers dry with a clean kitchen towel or paper towels. This step is crucial—don’t skip it.

Step 5: Combine Everything (5 minutes)

Return the drained cucumbers to the large bowl. Add the sliced red onion and chopped fresh dill. Pour the dressing over the top and toss gently until every slice is coated. Use a rubber spatula or your hands (clean, obviously) to make sure the dressing gets into all the nooks.

Step 6: Chill and Rest (30 minutes minimum, 2 hours ideal)

Cover the bowl and refrigerate for at least 30 minutes. This resting time lets the flavors meld and the cucumbers absorb some of the dressing. The salad actually improves over the first few hours. I’ve made it the night before and it was even better the next day.

Before serving, give it a gentle stir. Taste and adjust seasoning if needed. Sometimes I add a little more fresh dill right before serving for a pop of color and freshness.

Pro tip: If you’re serving this at a party, set the bowl in a larger bowl filled with ice to keep it cold. Warm cucumber salad is sad cucumber salad.

Cooking Tips & Techniques

After making this creamy cucumber dill salad with red onion more times than I can count, I’ve picked up a few tricks that make a real difference.

The Salting Secret

Don’t rush the salting step. I once skipped it because I was in a hurry, and the salad was watery within 20 minutes. The salt draws out moisture from the cucumbers, which means your dressing stays thick and creamy instead of turning into a thin, watery mess. Ten minutes is the minimum. Fifteen is better.

Slice Evenly for Best Texture

Uneven slices mean some cucumbers are perfectly dressed while others are bare. Take the extra 30 seconds to make your slices uniform. If you’re not confident with a knife, use a mandoline slicer set to ⅛ inch. Just watch your fingers—I’ve got the scars to prove it’s worth using the guard.

Fresh Dill is Non-Negotiable

Dried dill tastes like hay. I know it’s tempting to use what’s in your spice cabinet, but fresh dill is what gives this salad its signature brightness. One bunch costs about a dollar and lasts a week in the fridge. Use the stems too—they’re edible and have good flavor.

Make It Ahead

This salad is actually better when made a few hours ahead. The flavors need time to get to know each other. If you’re bringing it to a gathering, make it in the morning and refrigerate until you leave. Just give it a quick stir and add a sprinkle of fresh dill before serving.

Common Mistake: Overdressing

Start with less dressing than you think you need. You can always add more, but you can’t take it away. The cucumbers will release a tiny bit of moisture even after salting, which will thin the dressing slightly. I usually reserve about 2 tablespoons of dressing and add it after the salad has rested if needed.

I once forgot to salt the cucumbers entirely—just tossed them straight into the dressing. The result was a sad, watery bowl that tasted more like cucumber-flavored milk than a proper salad. Learn from my mistakes.

Variations & Adaptations

This creamy cucumber dill salad with red onion is flexible. Here are some variations I’ve tried and loved.

Dairy-Free Version

Substitute the sour cream with a plain unsweetened coconut or oat yogurt. Use a vegan mayonnaise or just increase the yogurt to ¾ cup total. The texture will be slightly thinner, but the flavor is still great. I’ve made this for dairy-free friends and they didn’t miss a thing.

Extra Crunch Version

Add ¼ cup of thinly sliced radishes for a peppery crunch. Or toss in some chopped celery for even more texture. Both add color and a satisfying snap.

Herb Swap

Not a dill fan? Use fresh mint, basil, or a mix of parsley and chives. Each herb gives the salad a completely different personality. Mint makes it feel Mediterranean. Basil leans Italian. Parsley keeps it fresh without being too strong.

Protein-Packed Version

Add 1 cup of cooked, chilled chickpeas or ½ cup of crumbled feta cheese. The feta adds saltiness that pairs beautifully with the creamy dressing. Chickpeas turn this into a more substantial side or even a light lunch.

Spicy Kick

Add ¼ teaspoon of red pepper flakes or a finely minced jalapeño (seeds removed) to the dressing. The heat cuts through the creaminess and wakes everything up. I tried this on a whim one day and it’s become my secret weapon for potlucks.

I once made a version with fresh mint instead of dill and served it alongside these Greek chicken and rice bowls. The combination was incredible—cool, creamy, and bright against the warm, savory chicken.

Serving & Storage Suggestions

This creamy cucumber dill salad with red onion is best served cold, straight from the fridge. I like to transfer it to a chilled serving bowl for extra temperature control.

Serving Ideas

• Alongside grilled meats like burgers, chicken, or steak. The cool creaminess balances smoky char perfectly.
• As part of a summer picnic spread with this cheesy zucchini casserole and cold cuts.
• On top of a bed of lettuce as a quick salad lunch.
• Stuffed into a pita with falafel or grilled chicken for a refreshing sandwich.
• As a topping for grilled fish—especially salmon or white fish like cod.

I’ve also served this salad alongside creamy crack chicken for a potluck that was basically a creamy side dish showdown. Both disappeared.

Storage

Store leftovers in an airtight container in the refrigerator for up to 2 days. The salad will release some liquid as it sits, so give it a stir before serving again. If it looks watery, drain off the excess liquid and add a spoonful of fresh dressing.

I do not recommend freezing this salad. Cucumbers have high water content and will turn into mush when thawed. Trust me, I tried it once during a particularly ambitious meal prep session. It was not good.

Reheating

Do not reheat this salad. It’s meant to be served cold. If you’ve refrigerated it and it seems too thick, let it sit at room temperature for 10 minutes before serving. The dressing will loosen up naturally.

The flavors actually deepen after a day in the fridge. The dill mellows, the onion softens, and the dressing infuses every slice. Day-old creamy cucumber dill salad with red onion is often better than fresh-made.

Nutritional Information & Benefits

This creamy cucumber dill salad with red onion is surprisingly light for something so satisfying. Here’s the estimated nutritional breakdown per serving (based on 6 servings):

Nutrient	Amount Per Serving
Calories	120
Total Fat	10g
Saturated Fat	4g
Cholesterol	20mg
Sodium	420mg
Total Carbohydrates	6g
Dietary Fiber	1g
Sugars	3g
Protein	2g

Cucumbers are mostly water, which makes them hydrating and low in calories. They also contain vitamin K and small amounts of vitamin C and potassium. Red onions are rich in antioxidants, particularly quercetin, which supports heart health. Fresh dill is a good source of vitamin A and has antimicrobial properties.

If you’re watching your sodium, reduce the salt in the salting step and rinse the cucumbers thoroughly. You can also use a low-sodium salt alternative.

This recipe is naturally gluten-free and can be made dairy-free with simple substitutions. It’s also low-carb friendly—perfect for anyone watching their carbohydrate intake.

Conclusion

This creamy cucumber dill salad with red onion has become my most-requested side dish, and I honestly didn’t see it coming. It’s not fancy. It doesn’t have exotic ingredients or complicated techniques. But sometimes the simplest recipes are the ones that earn a permanent place at your table.

I love that this salad works for almost any occasion—a quiet weeknight dinner, a backyard barbecue, a holiday potluck. It’s forgiving, adaptable, and genuinely refreshing. The crunch of the cucumber, the bite of the onion, the cool creaminess of the dressing—it all comes together in a way that feels both nostalgic and new.

If you make this recipe, I’d love to hear how it turned out. Did you add something unexpected? Serve it with a favorite dish? Leave a comment below and let me know. And if you tweaked it to make it your own, even better. That’s what cooking is all about.

Go ahead—make a bowl of this salad. You might just find yourself guarding the leftovers too.

Frequently Asked Questions

Can I use regular cucumbers instead of English cucumbers?

Yes, but you’ll need to peel them and scoop out the seeds first. Garden cucumbers have thicker skin and larger seeds, which can make the salad watery and tough. Peel, halve lengthwise, scrape out the seeds with a spoon, then slice.

How long does this salad last in the fridge?

Up to 2 days in an airtight container. After that, the cucumbers start to lose their crunch and the dressing gets thin. Give it a stir before serving and drain any excess liquid if needed.

Can I make this salad ahead of time for a party?

Absolutely. In fact, I recommend it. Make it 4-6 hours ahead and refrigerate. The flavors meld beautifully. Just add a sprinkle of fresh dill right before serving to refresh the look and taste.

Why did my salad turn watery?

You probably skipped the salting step or didn’t let the cucumbers rest long enough. Salting draws out excess moisture so the dressing stays thick. Also, make sure you rinse and pat the cucumbers dry after salting. If your salad is already watery, drain off the liquid and stir in a spoonful of fresh sour cream or mayo.

Can I use dried dill instead of fresh?

I really don’t recommend it. Dried dill has a much weaker, hay-like flavor that doesn’t do this salad justice. Fresh dill is widely available and inexpensive. If you absolutely must use dried, use only 1 teaspoon and add it to the dressing so it has time to rehydrate.

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