Wild Alaska Pacific Cod Fillet with Pepperonata

Ingredients

• 4 x 125-150g (5-6oz) frozen fillets wild Alaska Pacific cod
• 3 tbsp olive oil
• 2 red peppers, deseeded and thinly sliced
• 2 yellow peppers, deseeded and thinly sliced
• 1 large red onion, thinly sliced
• 1 sprig fresh rosemary
• 3 tbsp capers
• Juice of 1 small lemon
• 12 black olives
• 4 handfuls fresh baby spinach leaves
• Salt and freshly ground black pepper