Quinoa Vegetable Soup

Name: Quinoa Vegetable Soup
Prep time: 10 min
Total time: 10 min
Cuisine: American
Ingredients: 2 tbsp. extra-virgin olive oil; 1 medium onion, chopped; 2 carrots, peeled and cut into thin rounds; 2 stalks celery, thinly sliced; 3 cloves garlic, thinly sliced; 1 large courgette, cut into 1.5cm pieces; 1 (400g) can chopped tomatoes; 1 (400g) can cannellini beans, rinsed and drained; 180 g quinoa; 1/2 tsp. ground cumin; 2 L low-sodium vegetable stock; 225 g Tuscan kale, ribs removed and leaves thinly sliced; 1 tbsp. fresh lemon juice; Crushed chilli flakes, for serving