This Cucumber and red onion salad couldn’t be easier to make with crispy slices of cucumber and red onion, mixed with fresh dill and a zesty lemon dressing. The perfect summer side dish.

This cucumber dill salad is so refreshing and full of flavor from just a few ingredients. It is really fast and easy to make, just like this Chickpea, cucumber and feta salad.
I love to serve this salad alongside some roasted potatoes like these Roasted Greek Potatoes with Lemon Tzatziki.
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Ingredients
To make this cucumber salad with sliced onion, all that’s needed are just a few ingredients. Take a look at the ingredient list below.
For the full recipe with the quantities, see the recipe card below.
- English cucumber (also know as seedless cucumber), thinly sliced. They don’t need to be peeled or deseed, everything can be eaten.
- Red onion, thinly sliced. Other types of onion like sweet onion, spring onion, pickled red onion, spring onion or sliced shallot also tastes great in this onion cucumber salad.
- Fresh dill – gives this salad so much flavor and really complements all the other ingredients.
Dressing
- Olive oil, a good quality, extra virgin olive oil tastes great in this dressing.
- Lemon juice, freshly squeezed always tastes better.
- Garlic, gives this dressing a punch of flavour.
- Honey, to balance out the acid from the lemon juice. For a vegan option, use maple syrup.
- Dijon mustard, just a little adds a lot of flavor.
- Sea salt and Black pepper
- Red chili flakes optional but a little hint of heat really balances the flavours. If you don’t like chilli, just leave it out completely. Or it can be replaced with some sweet paprika powder.
See recipe card for quantities.
Instructions
Making this healthy cucumber dill red onion salad is fast and easy. Just follow the step by step photos below.
For the full instructions see the recipe card at the bottom.
- Step 1: Start by slicing the cucumber and red onion thinly.
- Step 2: In a small bowl, stir together all the ingredients for the dressing.
- Step 3: Add the cucumbers and onion to a salad bowl.
- Step 4: top with the chopped dill.
Step 5: Pour the dressing over the vegetables.
Step 6: Toss to combine and let the salad marinade for at least 30 minutes in the fridge before serving.
Season the salad with more salt and pepper to taste.
Hint: Give the cucumber salad a good stir before serving since the dressing will gather et the bottom of the bowl.
Substitutions and Variations
- Cucumbers – Using English cucumbers will give the best tasting cucumber salad. , They don’t have to be peeled, are crispy and with fewer seeds. Persian cucumbers also tastes great, they are normally a lot smaller then English cucumbers, so go by weight. Regular cucumbers can also be used, I would recommend peeling them before adding to this salad.
- Spicy – To add a little spice to this easy cucumber salad, add a little extra red chill flakes or even sliced fresh chili. If you like it mild, just omit the chilli flakes all together.
- Vegan – for a vegan cucumber salad, use maple syrup instead of honey in the dressing.
- Herbs – instead of chopped fresh dill, frozen dill can also be used. Other herbs like parsley, basil or cilantro also works well.
- Veggies – Add more veggies to this cucumber salad, some great options are chopped tomato, bell pepper or some sliced avocado. Adding some olives is also a great idea! Also see this Mediterranean tomato and cucumber salad.
- Cheese – For some extra flavor, add some crumbled or feta cheese or goat cheese, shaved parmesan cheese or fried cubes of hallomie cheese.
- Onion – The red onion adds a lot of flavor to this salad. It can also be replaced with some pickled red onion, spring onion or sliced shallot. If you don’t like onions, just leave them out.
Another great salad to try is this Cucumber Salad with apple cider vinegar.
Serve this fresh side salad with a slice of homemade bread like this No knead olive bread or this No Knead Whole Wheat Bread.
Storage
This salad with cucumber and onion can be prepared ahead of time for meal prep. Store it in an airtight container in the fridge. It keeps fresh for about 4 days. Keep a big batch in the fridge and serve throughout the week as a side dish or light meal. The cucumbers will release liquids the longer they sit. Stir well before serving and if needed, drain a little of the liquids before eating.
This salad does not freeze well so I don’t recommend that.
Top Tip
This cucumber dill salad is easy and fast to make with just a few ingredients, the cucumber if the star ingredient. Use fresh and crispy cucumber that are full of flavor. Slice them in the thickness you like, super thin with a mandolin or a little thicker slices that will retain more of a crunch.
FAQ
No the Persian or English cucumber does not have to be peeled before adding to this cucumber salad.
The best kind is English cucumbers, they don’t have to be peeled and are crispy and with fewer seeds. Persian cucumbers also tastes great, they are normally a lot smaller then English cucumbers so go by weight. Regular cucumbers can also be used, I would recommend peeling them before adding to this salad.
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This Cucumber and red onion salad couldn't be easier to make with crispy slices of cucumber and red onion, mixed with fresh dill and a zesty lemon dressing. The perfect summer side dish.
- 2 (2 lb.) Persian or English cucumbers, thinly sliced
- 1 small red onion, thinly sliced
- ⅓ cup fresh dill, chopped
- ¼ cup olive oil, preferably extra virgine
- 1 lemon, juiced
- 1 garlic clove, minced
- 1 tablespoon honey or maple syrup
- 1 teaspoon dijon mustard
- 1 teaspoon sea salt
- ½ teaspoon ground black pepper
- ¼ teaspoon red chili flakes, optional
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Start by slicing the cucumber and red onion thinly. Add them to a salad bowl with the chopped dill.
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In a small bowl, stir together all the ingredients for the dressing and then pour over the vegetables. Toss to combine and let the salad marinade for at least 30 minutes in the fridge before serving.
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