Salads
This cucumber and onion salad recipe with mayo delivers the perfect balance of crispy texture and cool refreshment in just 10 minutes—ideal for summer picnics or quick weeknight meals.
The secret lies in thinly slicing the cucumbers and onions to maximize crunch while the mayo dressing binds everything together with a tangy, creamy finish. I developed this recipe after realizing how often store-bought versions fell flat, missing that essential crispness and freshness.
What makes this salad truly special is how effortlessly it comes together. You'll need just 5 simple ingredients—cucumbers, onions, mayo, salt, and pepper—plus optional garnishes like fresh dill or lemon juice for extra brightness.
The key technique is slicing the cucumbers paper-thin and soaking the onions briefly in cold water to mellow their sharpness without sacrificing texture. This ensures every bite stays crispy and satisfying.
By the time you're done, you'll have a vibrant, refreshing salad that's perfect for potlucks, sandwich toppings, or a light lunch. The cool crunch contrasts beautifully with rich meats or warm bread, making it a versatile addition to any meal.
Plus, it keeps well in the fridge for up to 3 days, so you can prep ahead and enjoy freshness all week.
The best part? This recipe is foolproof—no fancy techniques required. Whether you're hosting a gathering or just craving a quick, healthy side, this cucumber and onion salad delivers restaurant-quality results with minimal effort. Let's get started on creating your perfect batch!
Ingredients for cucumber and onion salad recipe with mayo
Five crisp, cool ingredients transform into restaurant-quality refreshment in minutes.
| Ingredient | Amount | Notes |
|---|---|---|
| Persian Cucumbers 🥒 | 2 whole | Thinly sliced paper-thin |
| Yellow Onions 🧅 | 1 whole | Thinly sliced, soaked 10 mins |
| Mayonnaise 🥫 | ½ cup | High-quality, tangy preferred |
| Kosher Salt 🧂 | ½ tsp | Diamond Crystal preferred |
| Freshly Ground Black Pepper 🌶️ | ¼ tsp | Freshly cracked for best flavor |
| Fresh Dill 🌿 | ¼ cup | Chopped, optional garnish |
| Lemon Juice 🍋 | 1 tbsp | Freshly squeezed, optional |
The cucumbers and onions are the stars here—Persian cucumbers stay crisp longer than regular varieties, so grab them if your store carries them. For onions, yellow or red work best—their sharper bite balances the mayo's creaminess. Thin-slicing is key: use a sharp knife or mandoline for paper-thin slices that stay crisp. I always buy organic onions from the store's fresh produce section—they're less likely to be treated with preservatives that make them last too long but lose flavor. If you're short on time, pre-sliced cucumbers from the salad bar section work in a pinch, though they won't be quite as crisp.
No mayo? Greek yogurt mixed with a splash of vinegar gets you close—about half the amount of mayo, but with a tangier kick. Fresh dill is ideal, but dried dill at one-third the amount works if you're in a bind. The lemon juice is optional but worth the extra squeeze—it brightens everything up. For extra crunch, add a handful of toasted sunflower seeds (about 2 tbsp). If you're prepping ahead, soak the onions in cold water for 10 minutes before draining—they'll be milder but still crisp. The salad holds up beautifully, so double the batch if you're feeding a crowd.
This salad keeps crisp and fresh for 3 days in the fridge—just store it in an airtight container with a paper towel pressed on top to absorb moisture. For maximum crunch, toss with a pinch of salt right before serving. The flavors actually improve after sitting for an hour, so make it ahead if you can. I always portion mine into small glass jars for easy grab-and-go lunches—just shake to redistribute the ingredients. If you're serving at a picnic, pack the dressing separately to keep everything extra crisp.
Why You'll Love This Recipe
- Five-Ingredient Magic: I swear by this combo—Persian cucumbers stay crisp, thinly sliced onions add bite, and mayo ties it all together. No fancy techniques, just chop, mix, and taste.
- Crispy-Creamy Balance: That first forkful? The cool, crunchy cucumbers cut through the rich mayo while the onions add a sharp, tangy punch. It’s the perfect bite—no heavy lifting required.
- Potluck Proven: I’ve brought this to barbecues, picnics, and even work parties. It’s the one dish that disappears fast, pairs with everything, and still looks fresh hours later.
- No-Waste Leftovers: Make a big batch—it keeps for days in the fridge, and the flavors only get better. My go-to for lazy nights when I’ve got grilled chicken or burgers sitting around.
Step-by-step instructions for crispy cucumber and onion salad
This refreshing salad comes together faster than you can say "summer picnic"—crisp, cool, and packed with bright flavors.
Prepare the Onions for Maximum Crispness
Peel the whole yellow onion and slice it paper-thin using a sharp chef's knife or mandoline. I like to hold the knife at a slight angle and make even, controlled strokes for uniform slices. Transfer them to a colander and cover with cold water. Let them soak for exactly 10 minutes—this removes the sharp bite and prevents bitterness while keeping them crisp.
After soaking, drain thoroughly using a fine-mesh strainer or paper towels. Press gently with another paper towel to remove all excess moisture. The drier the onions, the crisper they'll stay in the salad. I find that patting them dry with a clean kitchen towel works best for even results. Keep them in a bowl until ready to use.
Slice the Cucumbers with Precision
Wash the Persian cucumbers thoroughly and pat them completely dry. Using the same mandoline or sharp knife, slice them paper-thin—about 1/16-inch thick. I like to make two parallel cuts about 1/8-inch apart first to create thin strips, then slice those strips crosswise for uniform paper-thin rounds. This technique ensures even distribution in the salad and prevents any thick chunks.
As you slice, I recommend working in batches and immediately transferring the slices to a large mixing bowl. This prevents them from wilting before they get dressed. The thinner you slice them, the more they'll maintain their crisp texture when combined with the mayo later. Don't skip this step—thick slices will turn soggy.
Combine Ingredients for Perfect Balance
In a medium bowl, whisk together the 0.5 cup mayonnaise, 0.5 teaspoon kosher salt, and 0.25 teaspoon freshly ground black pepper until completely smooth. I prefer using a fork for this—it creates just enough air to lighten the dressing without over-whisking. Add the 1 tablespoon lemon juice and mix again, tasting as you go. The dressing should be tangy but not overpowering.
Gently fold the drained onions and cucumber slices into the dressing using a silicone spatula. Work carefully to avoid crushing the vegetables—you want them to remain crisp and intact. I find that cutting the spatula in half makes it easier to reach into the bowl and lift the ingredients without mashing them. The salad should look vibrant with the pale green cucumbers and translucent onions.
Finish with Fresh Dill and Chill
Sprinkle the chopped fresh dill over the salad and gently toss one final time. The dill adds an herbal brightness that cuts through the richness of the mayo. I like to distribute it evenly so every bite has that fresh dill flavor. Taste again and adjust seasoning if needed—sometimes the lemon juice needs a pinch more salt, or the pepper could use an extra crack.
Transfer the salad to an airtight container and refrigerate for at least 30 minutes before serving. This chilling time allows the flavors to meld perfectly and ensures the cucumbers stay crisp. The longer it chills, the better the texture becomes—up to 4 hours in the fridge. Serve it chilled as a refreshing side dish or light meal.
Pro Tips For Making Cucumber And Onion Salad Recipe With Mayo
- Slice Onions Thin: I learned this the hard way—thick onion slices make the salad taste like a punch to the face. Aim for paper-thin rings (almost translucent) so they soften just enough without turning mushy. Use a sharp knife or a mandoline for consistency—your patience here pays off.
- Salt Cucumbers First: Toss the sliced cucumbers with a pinch of salt and let them sit for 10 minutes before draining. This pulls out excess water, so your salad stays crisp instead of soggy. Skip this, and you’ll end up with a sad, watery mess—trust me, I’ve been there.
- Mix Mayo Last: Fold the mayo in right before serving so the onions and cucumbers don’t get soggy from sitting in it. If you’re prepping ahead, keep the dressing separate and toss it in right before eating. This isn’t the prettiest method, but it’s the tastiest.
- Use Ice-Cold Mayo: Chill your mayo in the fridge for at least 30 minutes before mixing—it blends better and keeps the salad from getting warm. I was skeptical until I tried it: the texture is smoother, and the salad stays refreshing longer. No excuses, just do it.
Wine and beer pairings for this cucumber and onion salad recipe with mayo
Crisp White Wine
A dry Riesling from Germany or Alsace is my go-to pairing—its bright acidity and citrus notes mirror the lemon in your salad while cutting through the mayo's richness. Look for a 2022 vintage with crisp apple and green apple flavors.
If you prefer something lighter, a Sauvignon Blanc from New Zealand delivers zesty grapefruit and herbal notes that complement the dill beautifully. 🍷
Crisp Lager Beer
For beer lovers, a crisp German Pilsner like Warsteiner or St. Pauli Girl works perfectly. The clean, malty sweetness balances the salad's tangy mayo while the effervescence cleanses your palate.
If you're in the mood for something hoppier, try a Belgian Witbier like Hoegaarden—its coriander and orange peel notes add an unexpected but delightful contrast to the cucumbers. 🍺
Sparkling Wine
For a celebratory touch, serve your salad with a Prosecco or Cava. The bubbles enhance the salad's refreshing quality while the slight sweetness in Prosecco complements the mayo.
I love pairing it with a Brut Nature style that has minimal sweetness—it won't overpower the salad's clean flavors. The effervescence makes every bite feel more special. ✨
Light Red Option
If you prefer red wine, a Pinot Noir with light body and red fruit notes works surprisingly well. Look for a Willamette Valley or Burgundy example—these wines have enough acidity to stand up to the mayo without overpowering the salad's freshness.
Avoid bold Cabernets or Syrahs, as their tannins will clash with the creamy texture. 🍇
Non-Alcoholic Pairings
For a refreshing non-alcoholic option, try sparkling water with lemon—just add 2 tablespoons of fresh lemon juice and a splash of agave syrup to chilled sparkling water. The bubbles and citrus enhance the salad's brightness.
For something more substantial, a cucumber-mint infused iced tea (steep 2 cucumber slices and 4 mint leaves in hot tea, then chill) mirrors the salad's flavors perfectly. 💧
Nutrition facts
Frequently asked questions
Can I use regular cucumbers instead of Persian cucumbers?
Yes, but they won't stay as crisp. Persian cucumbers have fewer seeds and thinner skin, which means they hold up better in the mayo dressing. If you use regular cucumbers, slice them 1/8-inch thick instead of paper-thin and add them to the salad just before serving to preserve texture.
Why do the onions need to soak in water?
Soaking removes the sharp, bitter edge from raw onions while keeping them crisp. The 10-minute cold water soak softens the onion's pungency without cooking it, so it stays crunchy. Skip this step, and the salad might taste too strong—especially if you prefer milder flavors.
How can I make this salad last longer without getting soggy?
Store it in an airtight container with a paper towel pressed on top to absorb excess moisture. Keep it refrigerated for up to 3 days, but for maximum crispness, eat it within 2 days. If the cucumbers start to soften, drain the mayo slightly before serving.
What if I don’t have fresh dill?
No problem! Use dried dill at one-third the amount (about 1 teaspoon instead of 0.25 cup fresh) or swap it for chopped parsley or a pinch of celery seed for a similar earthy note. The lemon juice and salt will still balance the flavors perfectly.
Can I make this salad ahead of time?
Yes, but with a trick: Prep the dressing and chop the veggies separately, then combine them just before serving. This keeps everything crisp. If you must mix it ahead, store the onions and cucumbers in one container and the mayo dressing in another—combine only when ready to eat.