Carrot Tomato soup

1 onion, chopped
olive oil
equal amount of carrots and (yellow) tomatoes e.g. 450 g
salt 
pepper 
bay leaves


Soften onion in olive oil in a pot, add chopped carrots and tomatoes. Add some water or stock, salt, pepper and a couple of bay leaves. Simmer for about 30 minutes. Puree with immersion blender.