Green goddess soup with spinach and hazelnut

Ingredients

• 2 tablespoon olive oil
• 1/2 leek, roughly chopped
• 1 celery stick, roughly chopped
• 400 gram spinach, rinsed, drained and chopped
• 2 cup vegetable stock
• 1/2 cup hazelnuts, roasted and shelled (see recipe tip)
• 1/2 teaspoon salt
• pinch of nutmeg
• small handful of basil or parsley
• 2 slice gluten-free bread, cubed
• 1/4 teaspoon chilli flakes (optional)
• 1/4 teaspoon salt and a grinding of pepper