Rustic Vegetable Soup with Herb Croutons
A hearty, humble vegetable soup that celebrates seasonal produce and simple technique. This rustic country soup combines carrots, leeks, onions, and courgettes simmered in vegetable stock with warm mixed herbs, creating a deeply savory, aromatic broth. What makes it special is the contrast of textures: the tender vegetables against crispy herb-crusted croutons that float on top, plus a final drizzle of olive oil for richness. The soup is light yet satisfying, with bright herbaceous notes throughout. Perfect for weeknight dinners, casual entertaining, or meal prep. Serve it in warm bowls as a complete meal or appetizer. This version distinguishes itself through its emphasis on simple ingredients and layered herb flavor—adding herbs both to the broth and to the croutons for depth.
Ingredients
- 2 tbsp olive oil
- 2 onion, finely chopped
- ¼ tsp garlic granules
- 1 lb carrots, peeled and finely diced
- 2 leeks, finely sliced
- 1 ½ tbsp mixed herbs1.5 tbsp fresh parsley plus 1/2 tsp dried thymeequivalentherbaceous
dried herbs lose freshness faster
Full guide → - 2 litres vegetable stock
- 3 zucchini, finely diced
- 4 slices thick country style bread
- sea salt(optional)
- ground black pepper(optional)
Instructions
- 1
Preheat the oven to 350°F.
- 2
Heat half of the olive oil in a large saucepan over medium heat.
- 3
Add the chopped onions and cook until starting to turn brown.
- 4
Add the garlic granules and cook for a minute.
- 5
Stir in the carrots, leeks, and half the mixed herbs. Pour in the vegetable stock.
- 6
Simmer until the vegetables are tender.
- 7
Meanwhile, cut the bread into small cubes and place on a baking tray.
- 8
Drizzle the bread with the remaining olive oil and sprinkle with the remaining mixed herbs.
- 9
Roast in the oven until golden brown.
- 10
Stir the zucchini into the soup and cook briefly.
- 11
Season with salt and pepper.
- 12
Serve the soup in warm bowls, topped with croutons and a drizzle of olive oil.
Tips
Reserve courgettes to add at the end so they maintain their tender texture and bright color rather than becoming mushy during the full simmer. This layered cooking approach keeps each vegetable at its ideal doneness.
Make croutons while soup simmers for efficiency. Toss bread cubes in oil and herbs before roasting so they absorb flavor evenly and crisp thoroughly without burning.
Finish soup with extra virgin olive oil and warm bowls before serving—heat preserves the oil's flavor and soup stays hot longer, improving overall experience.
Good to Know
Refrigerate in airtight container up to 4 days. Reheat gently on stovetop, adding water if needed to restore consistency. Croutons best served fresh; store separately in airtight container up to 2 days.
Prepare soup through courgette addition and cool completely. Store separately from croutons. Reheat before serving and make fresh croutons or warm stored ones in oven.
Ladle into warm bowls. Top with warm croutons and drizzle with olive oil. Serve immediately as a light lunch or appetizer.
Common Mistakes
Add courgettes at the start to avoid mushy texture and dull color; they cook quickly so join the pot near the end.
Skip stirring the soup during simmer to avoid breaking down vegetables; gentle movement only when necessary.
Don't skip the final olive oil drizzle to avoid flat flavor and missing richness that ties the dish together.
Substitutions
dried herbs lose freshness faster
Full guide →adds tang or herb notes
FAQ
Can I make this soup ahead and freeze it?
Yes, freeze the broth up to 3 months in airtight containers, but freeze croutons separately. Thaw broth overnight in refrigerator and reheat gently, adding water if needed. Toast croutons fresh before serving for best crunch.
What if I don't have mixed herbs?
Use 1 tsp dried thyme, 1 tsp dried parsley, and 1/2 tsp dried oregano as a substitute. Fresh herbs work too: use 1 tbsp fresh parsley, 1 tsp fresh thyme. Add fresh herbs in the last minute to preserve flavor.
Can I use different vegetables?
Absolutely. Swap carrots for parsnips, add celery, potatoes, or mushrooms. Keep total vegetable weight similar. Add quick-cooking vegetables like courgettes at the end; root vegetables at the start. Adjust simmer time based on hardness.