Zesty Radish and Red Onion Salad with Fresh Dill -

5 from 1 vote

This bright and zesty Radish Salad recipe with red onions, creamy feta cheese, and fragrant fresh dill is a lively addition to your table. It comes together quickly, and with a tangy lemon vinaigrette, it pairs perfectly with crab cakes and rich, creamy dishes like seafood casserole.

Radish Red Onion Salad in white oval serving bowl with serving spoon garnished with fresh dill.

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Why This Recipe is a Keeper!

With crisp radishes, zesty red onions, creamy feta cheese, and fresh dill, this Radish and Red Onion Salad celebrates spring with simplicity and sophistication.

This refreshing side dish, in which radishes take center stage, comes together quickly and pairs perfectly with grilled fish, seafood, and chicken recipes. Add a can of drained and rinsed white beans or a can of tuna or salmon, and you have a delicious salad for an easy, healthy lunch.

This radish salad recipe is:

So good! The mild, spicy flavor of crisp radishes pairs perfectly with the assertiveness of red onion, tangy feta cheese, and fragrant fresh dill.
Quick and easy! This radish salad recipe comes together in under 30 minutes.
Healthy, light, and low in calories.
Versatile! Add drained and rinsed canned beans, tuna, or salmon for protein.

How to Make Radish and Red Onion Salad:

Recipe Ingredients:

Here’s everything you’ll need to make this radish salad recipe and instructions for preparing the ingredients. The exact quantities are on the recipe card below.

Ingredients for Radish Red Onion Salad in glass bowls.

Ingredient Notes and Substitutions:

Radishes: This radish salad recipe uses standard “table” radishes. Try other types of radishes, like French breakfast radishes, which are milder and sweeter than common red radishes but still have a peppery, mustardy piquancy.
Red Onion: Also known as purple onions.
Dill: There’s no substitute for fresh dill! Fresh mint will also work in this radish salad recipe.
Lemon Juice: Like fresh dill, there’s no substitute for fresh lemon juice.
Dijon Mustard: You can’t go wrong with Grey Poupon, which is widely available in every supermarket. Grey Poupon originated in Dijon, France, in the 1800s. Although Kraft Heinz now owns it, it has authentic roots. Maille is also excellent and genuine, but it’s pricey.
Red Wine Vinegar: Red wine vinegar and lemon juice have two different flavor profiles. Although an acid, red wine vinegar adds depth to the bright acidity of lemon juice to keep the vinaigrette from tasting “one-note.”

Step-By-Step Instructions:

Gather and prep all the ingredients.
In a small bowl, combine the lemon juice, red wine vinegar, garlic, and Dijon mustard.
Drizzle in the olive oil, whisking constantly until combined and the vinaigrette is fully emulsified.
Season to taste with salt and black pepper.

Combine the sliced radishes, red onion slices, and fresh dill in a bowl.
Pour the vinaigrette over and stir to coat.

Radishes, red onion and dill in glass bowl.

Radishes, red onion and dill mixed together in glass bowl.

Transfer to a serving bowl and gently stir in the crumbled feta cheese. Serve immediately, garnished with fresh dill sprigs.

Radish Red Onion Salad in white oval serving bowl with serving spoon with small bowls of dill sprigs and whole radishes.

That’s it! A lovely, lively spring-inspired radish salad!

Chef Tip:

Use feta cheese that’s still in block form. Although crumbled feta cheese will also work, it looks messy, and the smallest particles tend to dissolve into the acidic dressing.

Frequently Asked Questions:

Can you make a Radish and Red Onion Salad ahead of time?

This radish salad can be made to the point of adding the vinaigrette. Store the vegetables and the vinaigrette separately. The acidic dressing will soften the radishes substantially, reducing the crunch factor.

What other vegetables go well in a radish salad?

Cucumbers would work well in this salad, as would a handful of blanched green beans.