Roasted Radish Salad with Cauliflower

The Secret to a Perfect Roasted Radish Salad

One of the best things about winter is the availability of seasonal produce.

Coloured cauliflower starts to appear in abundance, and what could be more gorgeous than vibrant purple cauliflower.

Best of all, when roasted, the colours do stick, and you don’t lose any of the violet hues.

The next best thing we have come to love is roasted radish.

This roasted radish salad reimagines the humble radish into something elegant.

Who would have thought that roasting radishes could alter them into such sweet vegetables? Even better is how easy they are to roast. There really is nothing to it.

Serve it up on a bed of watercress leaves and sprinkle some flutters of quinoa puffs for the perfect finish.

Drizzled with a light apple-balsamic vinaigrette, it’s a beautiful side or light main that proves radish for salad can be both simple and striking.

If you have leftover radish, try our Radish and Tomatillo Salad or Easy Tomato Burrata Salad.

Recipe Overview

Flavour/Texture: This roasted radish salad is a wonderful wintery roasted vegetable recipe that isn’t too heavy and stodgy like potatoes or pumpkins. The radishes are reduced to a lovely softness while the florets also lose their hard crunch.

The watercress lightens the salad while the puffed quinoa adds softness.

The cauliflower and radish offer earthy, nutty sweetness; the watercress is a little peppery, while the simple vinaigrette gives the salad the much-needed tartness.

Ease: The prep is super easy as all you’re doing is cutting up some florets and radishes and mixing some salad dressing. Chuck vegetables in the oven and assemble. Nothing to it!

Time: This recipe takes 40 minutes and 30 minutes is oven time. While the radish takes the longest, you can do a lot of the other prep while it’s in there to save on some time.

Ingredients You’ll Need to Make This Roasted Radish Salad

Red radishes: Get nice large, vibrant red radishes for this recipe. If you can only find smaller ones, get more and don’t cut them into quarters as they would be too small. You can even roast them whole if you wish.

Olive oil: You will need olive oil to coat the vegetables and make the salad dressing. You can use your normal olive oil for cooking, coating and a good one for dressing.

Purple cauliflower: Just a small cauliflower will suffice as a side dish unless you know for a fact it will be devoured!

During the winter months, even our local supermarket stocks them, so there is no need to go scouring for them in obscure places.

Be sure to also try our Purple Cauliflower Salad with Lemon Mustard Tahini.

Watercress: Watercress don’t last very long, so, if possible, get them the day before or, even better, on the day, so the leaves are nice and fresh.

Wilted watercress is hard to revive, and it won’t be so good for this salad or for or Watercress Salad with Apple and Pear.

Puffed quinoa: They last a long time, so don’t feel like they go to waste if you had to buy a packet and only need a tbsp.

They are fantastic for adding to all sorts of salads as they don’t have an obtrusive flavour, and they give off these lovely delicate pops of crunch when you eat them.

Variations and Substitutions

No purple cauliflower: If purple cauliflower is not in season, a typical head of cauliflower will, of course, be ok to use in this recipe. Should orange cauliflower also be in season, feel free to use that instead.

Different types of radishes: You can use any coloured radishes or even a rainbow of red, white and purple to mix it up a bit. If you can find French breakfast radishes, they would look great too.

Watercress substitute: Some great watercress alternatives include rocket leaves or arugula, spinach leaves or nasturtium leaves.

Puffed quinoa alternative: If you don’t wish to use puffed quinoa, you can substitute it with puffed rice or any other puffed grain. What you’re after is some light pops of crunch but a delicate one at that.

Add warmth: Sprinkle cumin, smoked paprika, or dukkah on radishes before roasting for a Middle-Eastern flair.

Add protein: Toss in chickpeas, lentils, or grilled halloumi to make this a light main course.

Add crunch: No puffed quinoa? Use toasted almonds, sunflower seeds, or crispy chickpeas.

How to Make This Roasted Radish Salad

Preheat the oven at 200°C or 400°F.

Prepare 2 sheet pans or baking dishes lined with parchment paper.

Cut 4 of the smallest radishes into half and the other 4 into quarters.

Coat with ½ tbsp of olive oil and season with salt and pepper.

Place on one of the baking dishes and put into the oven for 30 minutes.

Cut the purple cauliflower into florets.

Coat with 1 tbsp of olive oil and season with salt and pepper.

Place on the other baking dish and put into the oven 15 minutes after the radish.

Remove both at the 30-minute mark.

How to Make Balsamic Glaze Vinaigrette

In a small mixing bowl, add the rest of the olive oil, apple cider vinegar and balsamic vinegar.

Mix until well combined.

How to Assemble the Salad

In a medium sized mixing bowl, add the watercress, dressing and salt and pepper to taste. Toss until well combined.

On a serving platter or the sheet pan you were roasting in, place the watercress as the base.

Then, add the roasted purple cauliflower and roasted radishes on top.

Sprinkle puffed quinoa on top.

Serve.

How To Make This Salad Perfectly [Expert Tips]

Choose firm radishes: Fresh, tight-skinned radishes roast evenly and stay juicy inside.

Cut evenly: Halve smaller ones and quarter larger for consistent texture.

High-heat roasting: 200 °C (400 °F) creates golden edges and sweetness — don’t overcrowd the tray.

Add cauliflower later: It cooks faster than radish; stagger baking times to prevent over-browning.

Use quality olive oil: Roasting brings its flavour forward, so use your best bottle.

Balance the acidity: Taste the apple-balsamic dressing before serving — a pinch of salt or honey refines the tang.

Serve warm or room-temp: The contrast of warm vegetables and cool greens is what makes this radish salad recipe special.

Finish with texture: Don’t skip the puffed quinoa — it adds a light crunch that elevates the salad.