Trout with creamy orzo - Trout and Salmon

Ingredients

• 3 tbsp rapeseed oil
• 1 onion, finely chopped
• 2 cloves garlic, crushed
• 300g orzo pasta
• 1 litre vegetable stock made with a reduced sodium stock cube
• 2 x 250g bunch asparagus, trimmed and cut into chunks
• 3 tbsp half-fat crème fraiche
• 3 tbsp grated parmesan cheese, plus extra to serve
• Handful basil, shredded
• 50g plain flour
• 4 rainbow trout fillets