Zucchini and basil soup

Here is a good soup to make with the zucchini and basil in your garden.

4 Tablespoons extra virgin olive oil, plus extra to drizzle
1 small onion, roughly chopped
1 pound zucchini, thickly sliced
7 ounces potatoes, peeled and cut into chunks
3 cup vegetable stock
Freshly ground black pepper
Handful fresh basil leaves
1ounce grated Parmesan ( about 2 Tablespoons)

The olive oil should be heated in a medium saucepan. Zucchini and onion should be added  and cooked for 5 minutes on medium heat  potatoes should be added along with potatoes then stock and the black pepper. The heat should   be lowered. And gently simmer for 20 minutes.

Take off heat and stir in basil. Then with an immersion blender until smooth. The Parmesan should be stirred into it. Then heat through  if necessary , and serve drizzle with olive oil.