Heat the olive oil in a large saucepan over medium-low heat. Add onion, garlic, carrot, celery and thyme. Cook, covered, for 10 minutes, stirring occasionally, until softened. Add the canned tomatoes to pan with 3 cups of water. Increase the heat to high and bring to the boil.
Reduce heat to low. Add the couscous to pan and simmer for 5 minutes, until couscous is tender. Add rinsed butter beans, kale and vinegar. Simmer soup for 2–3 minutes, or until kale has wilted. Divide the soup between 4 serving bowls and garnish with extra thyme. Serve with toasted wholegrain sourdough rolls.
Spray a large saucepan with oil and set over a medium heat. Sauté onion for 3 minutes, or until softened. Add garlic, carrot, sweet potato and zucchini; cook, stirring occasionally, for 5 minutes, or until vegetables are hot.
Stir in curry paste; cook, stirring, for 1 minute, or until fragrant. Stir in tomatoes, stock and 2 cups of water; cover and bring to the boil. Reduce heat. Partially cover; simmer, stirring occasionally, for 25 minutes. Stir through the chickpeas and simmer for 10 minutes, or until vegetables are tender.
Stir through coriander. Ladle soup into bowls; top each with a dollop of yoghurt and extra coriander leaves.