Step 1: 1. in a large non-stick saucepan dry-fan the onion until soft
Step 2: 2. Add the remaining ingredients except and bring to the boil. Reduce the heat and simmer gently for 20 minutes until the lentils are soft.
Step 3: 3. Allow to cool slightly then blend or purÃ©e in small batches in a food processor. Thin the soup down with a little extra vegetable stock or water. Reheat in a saucepan as required.
Step 4: 4. Season to taste with black pepper.