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Summer Squash and Red Quinoa Salad with Walnuts

This vibrant summer squash and red quinoa salad is a celebration of seasonal textures and bright, zesty flavours. The earthy depth of the red quinoa provides a robust base for the delicate ribbons of assorted squash, which are lightly salted to achieve a perfect, tender consistency. Fresh parsley and basil add a punch of herbal fragrance, while toasted walnuts offer a satisfying crunch that elevates this vegetarian dish from a simple side to a standout main course.

Ideal for alfresco dining or a nutritious meal prep option, this salad is packed with plant-based protein and healthy fats. The dressing, a sharp blend of lemon and sherry vinegar enriched with salty Parmesan, ties everything together beautifully. Serve it at room temperature to allow the aromatics to shine, perhaps alongside some crusty sourdough for a light yet filling summer lunch.

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Ingredients for Summer Squash and Red Quinoa Salad with Walnuts

  • 120ml red or other quinoa, rinsed in a fine-mesh sieve, drained

  • 2 teaspoons kosher salt plus more for seasoning

  • 450g assorted summer squash

  • 2 tablespoons finely grated Parmesan plus 40g shaved with a peeler

  • 1 teaspoon finely grated lemon zest

  • 2 tablespoons fresh lemon juice

  • 1 tablespoon Sherry vinegar

  • 6 tablespoons extra-virgin olive oil

  • Freshly ground black pepper

  • 1/2 cup flat-leaf parsley leaves

  • 1/2 cup walnuts, toasted

  • 1/4 cup fresh basil leaves, torn

Bring quinoa and 950ml water to a boil in a medium saucepan. Season with salt, cover, reduce heat to medium-low, and simmer until quinoa is tender but not mushy, 12-15 minutes. Drain; return quinoa to hot saucepan. Cover and let sit for 15 minutes. Uncover; fluff with a fork and let cool.

Cut squash into 1/8"-thick slices, some lengthwise and some crosswise. Transfer to a large bowl, season with 2 teaspoons salt, and toss to coat. Let sit until slightly wilted, about 15 minutes. Rinse under cold water and drain well. Pat dry with paper towels.

Whisk grated Parmesan, zest, juice, and vinegar in a medium bowl. Gradually whisk in oil. Season dressing with salt and pepper.

Combine squash, quinoa, parsley, walnuts, and basil in a large bowl. Pour dressing over; toss to coat. Garnish with shaved Parmesan.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

Article history

The information on this page is peer reviewed by qualified clinicians.

  • 28 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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