Creamy Dill Cucumber Salad with Red Onion – Easy Summer Side

My husband looked up from his plate, fork halfway to his mouth, and said, “This is the only cucumber salad I want from now on.” I had to stop myself from saying I told you so. He’s not one to get excited about vegetables, let alone something as simple as cucumbers. But there it was—a quiet, genuine compliment that landed harder than any rave review. And that’s how this creamy dill cucumber salad with red onion earned its permanent spot in our fridge.

I’d been tinkering with the dressing for weeks, trying to get that balance of tangy and creamy without it feeling heavy. You know how some creamy salads just sit in your stomach? This one doesn’t. It’s light, refreshing, and honestly, it feels like a cheat code for summer cooking. The first time I made it, I used it as a quick side for grilled chicken. The second time, I ate it straight from the bowl for lunch. No judgment here.

What I love most about this creamy dill cucumber salad with red onion is how it manages to be both simple and memorable. It’s not trying to be fancy—it’s just really, really good. The cucumbers stay crisp, the red onion adds a little bite, and the dill brings that fresh, garden-y flavor that makes everything taste like sunshine. If you’ve been looking for a side dish that actually gets eaten, this is it.

Why You’ll Love This Creamy Dill Cucumber Salad with Red Onion

• Quick & Easy: This comes together in under 15 minutes. No cooking, no fuss—just chop, mix, and serve. Perfect for those nights when you need a side dish fast.
• Simple Ingredients: You probably already have most of these in your kitchen. No fancy grocery trips required. It’s the kind of recipe you can make on a whim.
• Perfect for Summer: This salad is a lifesaver for barbecues, potlucks, and lazy weeknight dinners. It pairs beautifully with almost anything off the grill.
• Crowd-Pleaser: I’ve brought this to gatherings and watched people go back for seconds. It’s one of those dishes that surprises everyone because it’s so simple yet so satisfying.
• Unbelievably Delicious: The dressing is the star here—creamy without being gluey, tangy without being sour. It coats every slice of cucumber perfectly.

What makes this creamy dill cucumber salad with red onion different from every other version? It’s the technique. Instead of just tossing everything together, I salt the cucumbers first. This little step draws out excess water so your salad doesn’t turn into a watery mess an hour later. It’s a game-changer, honestly. Plus, the dressing uses a mix of sour cream and Greek yogurt for that perfect balance of richness and tang. Trust me, this is the version you’ll come back to.

What Ingredients You Will Need

This recipe uses simple, everyday ingredients to create something truly special. Every component has a job, and together, they make magic.

• English cucumbers (2 large) – I prefer English cucumbers because they have thinner skin and fewer seeds. Regular cucumbers work too, but you’ll want to peel them and scoop out the seeds.
• Red onion (1 medium) – Thinly sliced. Red onion adds a beautiful color and a mild, sharp bite that balances the creamy dressing. If you’re sensitive to raw onion, soak the slices in cold water for 10 minutes before adding them.
• Fresh dill (¼ cup, chopped) – Fresh is non-negotiable here. Dried dill just doesn’t have the same bright, grassy flavor. I buy a big bunch and use the rest in this fresh quinoa and kale power salad.
• Sour cream (½ cup) – Adds richness and a subtle tang. I use full-fat for the best texture, but light sour cream works in a pinch.
• Plain Greek yogurt (¼ cup) – This lightens the dressing while adding protein and a pleasant tang. I recommend Fage or Chobani for thickness.
• White wine vinegar (2 tablespoons) – Brightens everything up. You can substitute apple cider vinegar or lemon juice if needed.
• Olive oil (1 tablespoon) – A little extra virgin olive oil rounds out the flavors. Use a good-quality one if you have it.
• Garlic (1 small clove, minced) – Just enough to add depth without overpowering the dill.
• Salt (1 teaspoon, plus more for salting cucumbers) – I use fine sea salt. It draws moisture out of the cucumbers and seasons the dressing.
• Black pepper (½ teaspoon, freshly ground) – Adds a gentle warmth that complements the dill.
• Sugar (½ teaspoon) – Just a pinch to balance the acidity. Don’t skip it—it makes the flavors sing.

Equipment Needed

You don’t need much for this creamy dill cucumber salad with red onion, which is part of its charm.

• Large mixing bowl – For salting the cucumbers and mixing the salad. A glass or ceramic bowl works best.
• Small bowl – For whisking the dressing separately before combining.
• Sharp knife – A good chef’s knife makes slicing cucumbers and onions thin and even. I’ve been using my Wusthof for years, and it’s worth every penny.
• Cutting board – Any sturdy board will do. I prefer wood because it’s gentler on knives.
• Mandoline (optional) – If you want perfectly uniform slices in seconds, a mandoline is a game-changer. Just watch your fingers! A $20 Benriner from Amazon works great.
• Colander – For draining the salted cucumbers. A fine-mesh sieve works too.
• Whisk – For emulsifying the dressing. A fork works in a pinch, but a whisk gives you a smoother result.
• Clean kitchen towel or paper towels – For patting the cucumbers dry after salting. A lint-free towel is best.

Preparation Method

1. Salt the cucumbers. Slice your cucumbers about ¼-inch thick. I like using a mandoline for consistency, but a sharp knife works fine. Place the slices in a large bowl and sprinkle with 1 teaspoon of salt. Toss gently to coat. Let them sit for 15-20 minutes. You’ll see water pooling at the bottom—that’s exactly what you want. This step ensures your salad stays crisp and doesn’t get watery.
2. While the cucumbers rest, prepare the red onion. Slice the onion as thinly as you can. If you want to mellow the bite, soak the slices in a bowl of cold water for 10 minutes. Drain and pat dry before adding to the salad. I usually do this while the cucumbers are salting to save time.
3. Make the dressing. In a small bowl, whisk together the sour cream, Greek yogurt, white wine vinegar, olive oil, minced garlic, ½ teaspoon salt, black pepper, and sugar. Taste it. Adjust the salt or vinegar to your liking. The dressing should be tangy and creamy, but not thick—it should coat a spoon easily. Fold in the chopped fresh dill. Set aside while you finish prepping.
4. Drain and dry the cucumbers. After 15-20 minutes, transfer the cucumber slices to a colander and rinse them briefly with cold water to remove excess salt. Then, spread them out on a clean kitchen towel or a layer of paper towels. Pat them dry gently. This is important—if you skip this step, the dressing will slide right off.
5. Combine everything. In a large bowl, add the dried cucumber slices and the sliced red onion. Pour the dressing over the top. Use a rubber spatula or large spoon to fold everything together until every slice is coated. Don’t stir too aggressively—you want the cucumbers to stay intact.
6. Let it rest (optional but recommended). Cover the bowl and refrigerate for 15-30 minutes. This allows the flavors to meld together. The salad is delicious immediately, but it gets even better after a short chill. Give it a quick stir before serving.
7. Serve and enjoy. Transfer to a serving bowl and garnish with a few extra sprigs of fresh dill. The salad is best enjoyed within a few hours of making it, though leftovers are still good the next day (just drain any excess liquid before serving).

Cooking Tips & Techniques

I’ve made this creamy dill cucumber salad with red onion more times than I can count, and I’ve learned a few things along the way. Here are my best tips to help you nail it every time.

Don’t skip the salting step. I know it’s tempting to just toss everything together and call it a day. But salting the cucumbers first is the difference between a crisp, perfect salad and a sad, watery one. The salt draws out moisture, and when you pat them dry, you’re removing that excess water. The dressing stays creamy instead of thinning out.

Slice evenly. If some slices are thick and others are paper-thin, they’ll absorb the dressing unevenly. A mandoline is your best friend here. If you’re using a knife, take your time and aim for consistent slices. Your taste buds will thank you.

Fresh dill is a must. I learned this the hard way. I once made this salad with dried dill because I didn’t feel like going to the store. It was… fine. But it wasn’t great. Fresh dill has a brightness that dried dill can’t replicate. If you have leftover dill, it’s fantastic in these creamy stuffed mushroom caps.

Let it rest before serving. The flavors need a few minutes to get to know each other. Even 15 minutes in the fridge makes a noticeable difference. The dill infuses the dressing, and the onion mellows just a bit. It’s worth the wait.

Taste as you go. Everyone’s palate is different. Maybe you want more vinegar, or less garlic. Adjust the dressing to your liking before you toss it with the cucumbers. Once it’s all mixed, you can’t take it back.

Variations & Adaptations

This creamy dill cucumber salad with red onion is incredibly flexible. Here are some ways to make it your own.

• Dairy-Free Version: Swap the sour cream and Greek yogurt with a plant-based alternative. I’ve used coconut yogurt and vegan sour cream with great results. Just make sure they’re unsweetened and plain. The flavor will be slightly different, but still delicious.
• Add Some Crunch: Toss in a handful of toasted sunflower seeds or chopped walnuts right before serving. The nutty crunch adds a lovely contrast to the soft cucumbers.
• Make It a Meal: Add some chickpeas or shredded rotisserie chicken to turn this into a light lunch. It’s also fantastic as a topping for grilled fish or alongside this crispy herb-crusted roast chicken.
• Herb Swap: Not a dill fan? Try fresh mint or parsley instead. Mint gives it a refreshing, almost Middle Eastern vibe. Parsley keeps it fresh and mild.
• Spicy Kick: Add a pinch of red pepper flakes or a thin slice of fresh jalapeño to the dressing. The heat plays surprisingly well with the cool, creamy yogurt.
• Seasonal Twist: In summer, add halved cherry tomatoes for a pop of color and sweetness. In spring, toss in some thinly sliced radishes for extra crunch.

One of my favorite variations is adding a handful of fresh peas in early summer. They’re sweet and tender, and they make the salad feel even more garden-fresh.

Serving & Storage Suggestions

This creamy dill cucumber salad with red onion is incredibly versatile when it comes to serving. Here’s how I like to enjoy it.

Serving Temperature: Serve it cold or at room temperature. I prefer it straight from the fridge on a hot day, but it’s also lovely after sitting out for 15 minutes. The flavors open up a bit at room temperature.

Perfect Pairings: This salad is a natural side for anything off the grill—burgers, hot dogs, grilled chicken, or steak. It also pairs beautifully with these tender slow cooker BBQ pulled pork sliders. For a lighter meal, serve it alongside grilled fish or a simple omelette.

Storage: Store leftovers in an airtight container in the refrigerator for up to 2 days. The cucumbers will release more water over time, so before serving leftovers, drain off any excess liquid and give it a gentle stir. The texture won’t be quite as crisp as day one, but the flavor is still fantastic.

Freezing: I don’t recommend freezing this salad. The cucumbers will turn mushy and the dressing will separate. This is one of those recipes that’s best enjoyed fresh.

Make-Ahead Tip: You can prep the components separately. Slice the cucumbers and onions, make the dressing, and store them all in the fridge. Toss everything together just before serving. This is a lifesaver when you’re hosting.

Nutritional Information & Benefits

This creamy dill cucumber salad with red onion is a light, refreshing side that won’t weigh you down. Here’s a rough estimate per serving (based on 6 servings):

• Calories: ~120
• Fat: 8g
• Carbohydrates: 8g
• Fiber: 1g
• Protein: 4g
• Sugar: 4g

Health Benefits: Cucumbers are mostly water, which makes them incredibly hydrating—perfect for hot summer days. They also contain antioxidants and a small amount of vitamin K. Red onions are packed with quercetin, a powerful antioxidant that supports heart health. Dill is a good source of vitamin C and manganese, and it’s known for its digestive benefits. Greek yogurt adds protein and probiotics, which are great for gut health.

Dietary Considerations: This salad is naturally gluten-free and nut-free. To make it vegetarian, just use the dairy version. For a vegan option, follow the dairy-free variation above. It’s also low-carb and keto-friendly if you use full-fat dairy.

Potential Allergens: This recipe contains dairy (sour cream, Greek yogurt). If you have a dairy allergy, use plant-based alternatives as suggested in the variations section.

Conclusion

This creamy dill cucumber salad with red onion is the kind of recipe that proves simple things can be truly special. It’s quick, it’s fresh, and it’s the perfect side dish for almost any meal. Whether you’re hosting a barbecue, packing a picnic, or just need something easy for a weeknight dinner, this salad delivers every time.

I love how forgiving this recipe is—you can tweak it, swap ingredients, and make it your own without worrying about ruining it. That’s the beauty of simple cooking. It’s not about perfection; it’s about making something that tastes good and makes you feel good.

I’d love to hear how yours turns out! Did you add any twists? Serve it with something amazing? Drop a comment below and let me know. And if you’re looking for more easy, crowd-pleasing recipes, don’t forget to check out our full collection of recipes. Happy cooking!

Frequently Asked Questions

Can I use regular cucumbers instead of English cucumbers?

Yes, you can. Just peel them first and scoop out the seeds with a spoon. Regular cucumbers have thicker skin and more seeds, which can make the salad watery if you don’t remove them. The salting step is even more important with regular cucumbers.

How long does this salad last in the fridge?

It’s best within 24 hours, but it will keep for up to 2 days in an airtight container. The cucumbers will soften over time and release more liquid. Before serving leftovers, drain off any excess liquid and give it a stir. The flavor actually gets better on day two!

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

Absolutely. I recommend prepping the components separately—slice the cucumbers and onions, make the dressing—and storing them in the fridge. Toss everything together no more than 2 hours before serving. This keeps the cucumbers crisp and the salad looking fresh.

What can I substitute for fresh dill?

If you don’t have fresh dill, you can use fresh mint, parsley, or even chives. Each will give the salad a different character. Mint makes it refreshing, parsley keeps it mild, and chives add a gentle onion flavor. I wouldn’t recommend dried dill—it just doesn’t have the same brightness.

Is this recipe keto-friendly?

Yes, it is! This creamy dill cucumber salad with red onion is naturally low in carbohydrates. Just make sure to use full-fat sour cream and Greek yogurt to keep the carb count low. One serving has roughly 8g of carbs, most of which come from the cucumbers and onions.

Print