Preheat a heavy bottom soup pot over medium heat and sauté the onion, carrot and celery in a light drizzle of olive oil or water until softened and translucent and the veggies start to get a little color at the edges.
1 yellow onion, 1 small carrot, 1 celery stalk
Push the veggies to the side and add a drop of olive oil in the middle then drop in the minced garlic. Cook just until fragrant then stir in the chili flakes and herbs (oregano, bay, thyme, rosemary).
2 garlic cloves, 1 tsp red chili flakes, 1.5 tsp dry oregano, 8 sprigs fresh thyme, 1 sprig rosemary, 1 bay leaf
Add the beans, water, Passata, nutritional yeast and a pinch of salt and bring to a simmer. Cover with a lid and simmer for 25 minutes for the flavors to marry. (This soup tastes even better the following couple of days after it sat in the fridge and created magic together).
3 x15 oz canned cannellini beans, 1/2 cup Passata, 2 Tbsp nutritional yeast, 3 cups water
Transfer 1/3 to 1/2 of the bean soup to a powerful blender and process on the hot liquid setting until silky smooth. Stir back into the pot and combine with the rest of the soup.
Make Gremolata: While your soup is simmering mix together all the gremolata ingredients. Season with a tiny pinch of sea salt and some freshly cracked black pepper.
1/4 cup cup Italian parsley leaves, 1 large garlic clove, Zest from 1 lemon, 1 Tbsp olive oil, 1 pinch sea salt
Ladle the soup into bowls and serve with a spoon of the gremolata and a thick slice of bruschetta or crusty bread. (Alternatively you cab mix all the gremolata in the pot of soup but I like to serve it individually).