Post Pilates Pesto (soup)

The month of veg seems to be going well so far and this post pilates, first day back at work after the holidays contribution to the experiment was particularly good.  Exactly what was required on a cold, miserable, wet night. The Very Tolerant Boyfriend's brother gave him some really delicious sicilian pesto at Christmas which made this soup really special.

1x red onion (diced)
1x clove garlic (diced)
2x large carrots (peeled and diced)
1x large leek (sliced)
2x cans butter beans (drained and rinsed)
1lb red potatoes (peeled and diced)
1x sprig rosemary
1x ltr vegetable stock
Salt and pepper
2x tsp pesto
200g spinach

Soften the onion, garlic and leek in some olive oil for 5-6 minutes. Add the stock and the diced carrots and potatoes and the drained beans with the rosemary, salt and pepper.  Bring to the boil and then leave to simmer until the potatoes are cooked through (15-20 mins).

Once the potatoes are cooked stir in the pesto and then add the spinach.  Leave the spinach to wilt and then stir in. Remove the rosemary stalk and serve.