One-Pot Seafood Pie | Darwin Fish Market

Ingredients

• 200g skinless salmon fillet, cut into 2cm pieces
• 200g peeled green prawns, deveined, tails removed, cut in half crossways
• 300g baby chat potatoes
• 50g butter
• 1 small brown onion, thinly sliced
• 2 tbsp plain flour
• 250ml (1 cup) chicken stock
• 80ml (1 ⁄3 cup) thickened cream
• 1 tsp finely grated lemon rind
• 110g (2 ⁄3 cup) frozen peas, thawed
• 30g baby spinach
• 1 sheet frozen puff pastry, just thawed
• 1 egg, lightly whisked