Prawn Saganaki Greek Ciabatta Sandwich Whipped Feta

Ingredients

• 400g shelled prawns
• 1 tsp flaked sea salt
• 1 tsp chilli flakes
• 1 tsp crushed black pepper
• 1 tbsp lemon juice
• 75ml olive oil
• 120g feta
• 1 lemon, zest grated and juiced
• 250g full fat Greek yoghurt
• 2 large tomatoes
• 2 tbsp pine nuts
• to taste parsley
• 1 ciabatta