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Provençal Vegetable Soup (Soupe au Pistou)

This Provençal vegetable soup, known traditionally as soupe au pistou, is a vibrant celebration of kitchen garden produce. A staple of Southern France, this vegetarian dish relies on a base of tender leeks, carrots, and potatoes, lightened by the addition of fresh green beans, courgettes, and Swiss chard. Unlike its Italian cousin minestrone, this soup is defined by the pistou—a fragrant, nut-free basil and garlic sauce that is stirred in just before serving to provide a bright, punchy finish.

Perfect for a light lunch or a comforting evening meal, this nourishing soup is as healthy as it is flavourful. The inclusion of pasta shells and edamame beans provides a satisfying bite and a boost of plant-based protein. For the most authentic experience, serve it in wide bowls with the remaining cheesy herb paste swirled through and plenty of crusty, grilled baguette on the side to soak up every last drop.

Continue reading below

Ingredients for Provençal Vegetable Soup (Soupe au Pistou)

  • 1 large leek (white and pale green parts only), washed and thinly sliced (200g )

  • 1 celery rib, cut into 1/2-inch pieces

  • 1 large carrot, cut into 1/2-inch pieces

  • 1 garlic clove, finely chopped

  • 1 large thyme sprig

  • 2 tablespoons extra-virgin olive oil

  • 230g boiling potatoes, peeled and cut into 1/2-inch pieces

  • 230g Swiss chard, stems cut into 1/2-inch pieces and leaves coarsely chopped

  • 1925ml water

  • 475ml thawed frozen edamame (fresh soybeans)

  • 230g courgette, cut into 1/2-inch pieces

  • 110g green beans, trimmed and cut into 1-inch pieces

  • 180ml medium pasta shells

  • 1 small tomato

  • 1 cup packed basil leaves

  • 1/2 cup packed flat-leaf parsley leaves

  • 2 garlic cloves, finely chopped

  • 2 tablespoons extra-virgin olive oil

  • 240ml coarsely grated Gruyère (90g)

  • Accompaniment: grilled baguette slices brushed with olive oil

How to make Provençal Vegetable Soup (Soupe au Pistou)

Cook leek, celery, carrot, garlic, and thyme sprig in oil with 1/2 teaspoons salt and 1/4 teaspoons pepper in a 5-to 6-quart heavy pot over medium heat, stirring occasionally, until vegetables brown and stick to bottom of pot, 10 to 15 minutes.

Add potatoes and chard stems with 1/2 teaspoons salt and cook, stirring occasionally, until beginning to soften, about 5 minutes. Add water and bring to a boil, stirring and scraping up brown bits.

Stir in edamame, courgette, green beans, pasta, chard leaves, and 1/4 teaspoons salt and simmer, uncovered, until pasta is al dente and vegetables are tender, about 10 minutes. Discard thyme sprig.

Heat a dry small skillet (not nonstick) over medium heat until hot, then char tomato on all sides. Core tomato, then purée with basil, parsley, and garlic in a food processor. Add oil and cheese and blend well.

Remove soup from heat and stir in half of pistou and salt and pepper to taste. Serve soup with remaining pistou.

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.

  • 16 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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