Creamy Cucumber Salad with Red Onion & Dill – Easy 10-Minute Side

It was 11:17 PM on a random Wednesday in July, and I was staring into the fridge like it held the answers to the universe. The air conditioner had given up hours ago, and the last thing I wanted was to turn on the stove. A weird, specific craving had hit me—something cold, crunchy, creamy, and tangy. I didn’t have the energy for a proper meal, but I had a half-used English cucumber, a red onion that was starting to look a little lonely, and a bunch of dill that was definitely on its last leg. The idea just arrived, fully formed: creamy cucumber salad.

Honestly, I wasn’t expecting much. I mean, it’s cucumber salad, right? It’s the thing you see at every summer barbecue that everyone politely takes a spoonful of. But something about making it at 11 PM, with the kitchen light as the only lamp in the house, made me slow down. I sliced the cucumber paper-thin—maybe a little obsessively—and I didn’t rush the salting step. I let it sit and sweat while I whisked together a dressing that was more sour cream than mayo, because that’s what I had. And let me tell you, when I finally took that first cold, crunchy, dill-flecked bite, I actually laughed out loud. It was that good.

Maybe you’ve been there—a late-night kitchen experiment that turns into a new staple. This creamy cucumber salad with red onion and dill is that recipe for me. It’s the one I’ve made for every potluck since, the one my neighbor asked for the recipe after I brought her a bowl, and the one that proves you don’t need fancy ingredients to make something unforgettable. It’s simple, it’s fast, and it’s the kind of side dish that steals the show without even trying.

Why You’ll Love This Recipe

Let’s be real for a second. There are a million cucumber salad recipes out there, but this one is different. It’s the one I’ve tested on my family, my picky-eating friends, and even my own skeptical self at 11 PM on a Tuesday. It checks every single box for what a side dish should be.

• Quick & Easy: This comes together in just 10 minutes of active prep time. Seriously. You can make it while the burgers are on the grill or while you’re waiting for the pasta water to boil. It’s the definition of a last-minute side dish.
• Simple Ingredients: You likely already have everything in your kitchen right now. Cucumbers, onion, dill, sour cream (or yogurt), a little vinegar, and some salt and pepper. No fancy grocery trips required.
• Perfect for Summer: When it’s too hot to cook, this salad is a lifesaver. It’s cold, refreshing, and hydrating. It pairs perfectly with grilled meats, fish, or even just a crusty piece of bread.
• Crowd-Pleaser: I’ve brought this to barbecues, picnics, and holiday dinners, and it always gets rave reviews. Kids love the creamy texture, and adults love the bright, tangy flavor. It’s the salad that disappears first.
• Unbelievably Delicious: The secret is in the technique. Salting the cucumbers first draws out excess water, so the dressing stays creamy and doesn’t get watery. The combination of cool cucumber, sharp red onion, and fresh dill in a tangy sour cream dressing is pure comfort food magic.

This isn’t just another cucumber salad. It’s the one you’ll make over and over again because it’s so simple, so satisfying, and so incredibly good. It’s the kind of recipe that makes you look like a hero with almost zero effort.

What Ingredients You Will Need

This recipe uses simple, wholesome ingredients to deliver a big punch of flavor. Each component plays a specific role, from the crunch of the cucumber to the tang of the dressing. Here’s everything you’ll need.

For the Salad

• 2 large English cucumbers (or 3 medium Persian cucumbers) – These are the star of the show. I prefer English cucumbers because they have thin skin and fewer seeds, so you don’t need to peel them. They stay super crunchy.
• 1 small red onion, thinly sliced – Red onion adds a beautiful color and a sharp bite that mellows out as it sits in the dressing. If you’re not a fan of raw onion, soak the slices in cold water for 10 minutes before adding them.
• 1/4 cup fresh dill, finely chopped – Dill is non-negotiable here. Its fresh, slightly grassy flavor is what makes this salad sing. I’ve tried it with dried dill in a pinch, and it’s just not the same.

For the Creamy Dressing

• 1/2 cup full-fat sour cream – This is the base of our creamy dressing. It’s rich, tangy, and gives the salad that luscious texture. Greek yogurt works great as a lighter substitute (I use Fage 5% for best results).
• 2 tablespoons mayonnaise – Just a little bit adds richness and helps stabilize the dressing so it doesn’t separate. I recommend Hellmann’s or Duke’s for the best flavor.
• 1 tablespoon white wine vinegar – This brightens everything up. You can substitute with apple cider vinegar or even fresh lemon juice if that’s what you have on hand.
• 1 teaspoon granulated sugar – A tiny bit of sugar balances the acidity and brings out the natural sweetness of the cucumbers. Don’t skip it—it makes a difference.
• 1/2 teaspoon salt, plus more for salting the cucumbers – We use salt in two stages: first to draw water out of the cucumbers, then to season the dressing.
• 1/4 teaspoon black pepper, freshly ground – Adds a little warmth and depth.

Ingredient Selection Tip: Look for cucumbers that are firm, dark green, and free of soft spots. If you’re using regular garden cucumbers (the waxed kind), you’ll want to peel them first and scoop out the seeds with a spoon, as they can be bitter and watery.

Equipment Needed

You don’t need any fancy gadgets for this recipe, which is part of its charm. Here’s what you’ll need to pull it off.

• A sharp chef’s knife or a mandoline slicer – A sharp knife is essential for getting those thin, even slices. If you have a mandoline, this is the perfect time to use it. It makes the job faster and ensures every slice is uniform. I’ve used my cheap plastic mandoline from the grocery store for years, and it works just fine.
• A large mixing bowl – You’ll need one bowl for salting the cucumbers and another for mixing the dressing. Stainless steel or glass is best because they don’t retain odors.
• A smaller bowl or measuring cup – For whisking the dressing together.
• A whisk or a fork – To combine the dressing ingredients smoothly.
• A colander – To drain the salted cucumbers. A fine-mesh strainer works perfectly too.
• Clean kitchen towels or paper towels – To pat the cucumbers dry after salting. This step is crucial for a non-watery salad.
• Airtight container – For storing leftovers in the fridge. A glass container with a tight-fitting lid is ideal.

Preparation Method

Okay, let’s get to the good part. Follow these steps, and you’ll have a perfect creamy cucumber salad every single time. Trust me on the salting step—it’s the secret to success.

1. Prep the Cucumbers (5 minutes): Wash your cucumbers thoroughly. If you’re using English cucumbers, leave the skin on. Using a sharp knife or mandoline, slice them into thin rounds, about 1/8-inch thick. Try to keep them uniform so they salt and dress evenly. Place the slices in a large bowl.
2. Salt the Cucumbers (10 minutes, hands-off): Sprinkle the cucumber slices with 1 teaspoon of salt. Toss them gently with your hands to make sure every slice is coated. Let them sit at room temperature for 10 minutes. You’ll see water pooling at the bottom of the bowl—this is exactly what we want. The salt draws out the excess moisture, ensuring your salad stays creamy, not watery.
3. While the Cucumbers Rest, Prep the Onion and Dill (5 minutes): Thinly slice the red onion. If you want to mellow the bite, place the slices in a small bowl of ice water for 5-10 minutes. Finely chop the fresh dill. Set both aside.
4. Make the Dressing (3 minutes): In a small bowl, whisk together the sour cream, mayonnaise, white wine vinegar, sugar, 1/2 teaspoon of salt, and the black pepper. Taste it. It should be tangy, creamy, and just a little bit sweet. Adjust the salt or vinegar to your liking.
5. Drain and Dry the Cucumbers (2 minutes): After 10 minutes, pour the cucumbers into a colander. Rinse them quickly with cold water to remove the excess salt. Then, dump them onto a clean kitchen towel or a few layers of paper towels. Pat them dry as best you can. This step is annoying, I know, but it’s the difference between a perfect salad and a soggy one.
6. Combine and Toss (2 minutes): Transfer the dried cucumber slices back to the large bowl. Add the sliced red onion (drain and pat it dry first if you soaked it) and the chopped dill. Pour the dressing over the top. Using a rubber spatula or large spoon, gently fold everything together until every slice is coated in that creamy, herby dressing.
7. Rest and Serve (Optional, but Recommended): For the best flavor, cover the bowl and pop it in the fridge for at least 15-20 minutes before serving. This allows the flavors to meld together. The onions will mellow, the dill will infuse the cream, and the whole thing becomes greater than the sum of its parts.

Cooking Tips & Techniques

I’ve made this salad more times than I can count, and I’ve learned a few things the hard way. Here are my best tips for getting it perfect every time.

• Don’t skip the salt and drain step. I know it adds 10 minutes to the process, but it’s the single most important step. If you skip it, your dressing will be watery and thin within an hour. The salt doesn’t just remove water—it also seasons the cucumber from the inside out.
• Slice as thin as you can. Thick chunks of cucumber don’t absorb the dressing as well. Thin slices, almost translucent, are the goal. This is where a mandoline really shines. I once sliced my finger trying to get paper-thin slices with a dull knife—learn from my mistake and use a sharp blade or a guard.
• Pat the cucumbers bone-dry. After rinsing, I can’t stress this enough. Even a little residual water will start to thin out your dressing. I use a clean salad spinner after patting them with a towel for extra insurance.
• Let it sit before serving. This salad is good right away, but it’s amazing after 20 minutes in the fridge. The flavors marry together, and the onion loses its harsh edge. If you’re making this for a party, make it an hour ahead and keep it chilled.
• Taste and adjust. The amount of salt and vinegar you need can vary based on your cucumbers and your personal taste. Always taste the dressing before you add it to the salad, and taste the finished salad before you serve it. A little extra dill or a squeeze of lemon can brighten it right up.

Variations & Adaptations

This recipe is a fantastic base, and I’ve played around with it a lot. Here are some of my favorite twists.

• Greek-Style: Swap the sour cream for full-fat Greek yogurt, add 1/2 cup of crumbled feta cheese, a handful of halved Kalamata olives, and a pinch of dried oregano. It’s a whole different vibe, and it’s incredible with grilled lamb.
• Vegan Version: Use a plant-based sour cream (I like the one from Kite Hill) and vegan mayonnaise. The rest of the ingredients are naturally vegan. It works perfectly—just make sure to use a good quality vegan sour cream that has some tang.
• Add Some Crunch: For a bit of texture, fold in 1/4 cup of toasted sunflower seeds or slivered almonds right before serving. The nuttiness pairs beautifully with the dill.
• Spicy Kick: Add a thinly sliced jalapeño (seeds removed for less heat) or a pinch of red pepper flakes to the dressing. The heat contrasts wonderfully with the cool, creamy dressing.
• Herb Swap: Don’t have dill? No problem. Fresh mint, chives, or even flat-leaf parsley work beautifully. A combination of chives and parsley gives a very fresh, garden-like flavor.

Serving & Storage Suggestions

This salad is incredibly versatile. Here’s how to serve it and keep it at its best.

Serving: Serve this creamy cucumber salad chilled or at room temperature. It’s the perfect side dish for just about anything you can throw on the grill—burgers, hot dogs, grilled chicken, steak, or fish. It’s also fantastic alongside a hearty sandwich or a bowl of soup. I love it with a simple grilled lemon herb chicken for a complete summer meal. For a pretty presentation, transfer it to a shallow serving bowl and garnish with a few extra sprigs of fresh dill and a crack of black pepper.

Storage: Store any leftovers in an airtight container in the refrigerator for up to 2 days. The salad will continue to release liquid as it sits, so it’s best eaten the day it’s made. If you have leftovers, you can drain off the excess liquid before serving again. I do not recommend freezing this salad—the cucumbers will become mushy and watery when thawed.

Flavor Development: The flavors actually get better after a few hours in the fridge. The onion mellows, and the dill infuses the cream. However, the texture of the cucumber is best within the first 24 hours. It’s a wonderful make-ahead dish for a party—just give it a quick stir and a taste before you serve it, and add a pinch of salt if needed.

Nutritional Information & Benefits

This creamy cucumber salad is a lighter side dish that doesn’t sacrifice flavor. Here’s a general estimate per serving (based on 6 servings).

• Calories: ~120 kcal
• Fat: 9g
• Carbohydrates: 8g
• Fiber: 1g
• Protein: 2g

Health Highlights: Cucumbers are incredibly hydrating and low in calories, making them a great base for a refreshing side. They also contain antioxidants and a bit of vitamin K. Red onions are packed with quercetin, a powerful antioxidant that supports heart health. Dill is a good source of vitamin A and has been used for centuries to aid digestion. By using full-fat sour cream and a touch of mayo, you get a satisfying, creamy dressing that helps you feel full and content—no need for heavy, processed alternatives.

Dietary Considerations: This recipe is naturally gluten-free and vegetarian. For a lower-fat option, you can substitute the sour cream with plain Greek yogurt and use a light mayonnaise. To make it dairy-free and vegan, use plant-based alternatives as mentioned in the variations section.

Conclusion

So there you have it—my go-to creamy cucumber salad with red onion and dill. It’s the recipe that started with a late-night craving and a half-empty fridge, and it’s become a staple in my kitchen ever since. It’s proof that you don’t need a complicated ingredient list or hours of cooking to make something truly delicious. You just need a few good ingredients, a little bit of patience for the salting step, and the willingness to trust the process.

I really hope you give this one a try. Maybe you’ll make it for a backyard barbecue, or maybe you’ll make it on a quiet Tuesday night just because you deserve something cold, crunchy, and creamy. And when you do, I’d love to hear about it. Did you add a twist? Did your family love it? Did you make it at 11 PM like I did? Drop a comment below and let me know how it turned out. Don’t forget to pin this recipe for later and share it with a friend who needs a new summer side dish!

Frequently Asked Questions

Can I make this creamy cucumber salad ahead of time?

Yes, you can make it a few hours ahead of time. In fact, the flavors meld and improve after about 20-30 minutes in the fridge. However, it’s best eaten within 24 hours as the cucumbers will continue to release water and the dressing may thin out. If making ahead, you can also prep the cucumbers and dressing separately and combine them just before serving.

How do I keep my cucumber salad from getting watery?

The key is the salting and draining step. Do not skip it! After slicing the cucumbers, toss them with salt and let them sit for 10 minutes. Then, rinse them, and most importantly, pat them very dry with a clean kitchen towel or paper towels before adding the dressing. This removes the excess moisture that would otherwise water down your creamy dressing.

What is the best type of cucumber to use for this salad?

English cucumbers (also called hothouse or seedless cucumbers) are the best choice. They have thin, tender skin that doesn’t need to be peeled, and they have very few small seeds. Persian cucumbers are also a great option. If you only have regular garden cucumbers, you should peel them and scoop out the seeds with a spoon before slicing, as the skin can be tough and the seeds watery and bitter.

Can I use Greek yogurt instead of sour cream?

Absolutely! Full-fat or 2% plain Greek yogurt works beautifully as a substitute for sour cream. It will make the dressing slightly tangier and higher in protein. For the best texture, avoid non-fat Greek yogurt, as it can be a bit too thin and watery. I often use a 50/50 mix of Greek yogurt and sour cream for the perfect balance of tang and richness.

How long does creamy cucumber salad last in the fridge?

Stored in an airtight container, this salad will last for 1 to 2 days in the refrigerator. The texture is best on the first day. After that, the cucumbers will soften and the dressing will release more liquid. If you have leftovers, simply drain off any excess liquid and give it a good stir before serving again.

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