Recipe : One-tray roast salmon with asparagus

Tried and tested - a really healthy, and easy mid-week supper. Recipe courtesy of Sainsbury's May 2012 magazine.
Serves 4
Ingredients

• 1 lemon, quartered
• 750g new potatoes, halved lengthways
• 200g pack of asparagus tips
• 4 boneless salmon fillets
• 2 tbsp olive oil
• 1/2 bag of watercress
• tartare sauce 

Method

Preheat oven to 220 degrees (200C fan oven). Put the lemon quarters and potatoes in a bowl with 1 tablespoon of olive oil and some seasoning. Toss everything together and tip on to a baking tray in a single layer. Roast in the oven for 25 minutes.

After 25 minutes, tip in the asparagus tips and salmon fillets into the bowl with the remaining olive oil and season. toss everything together to coat with the oil.

Remove the tray from the oven and turn over the potatoes. Tuck the salmon and asparagus among the potatoes and return to the oven. Roast for 10 minutes or until the salmon is just cooked. Before serving, scatter over the watercress.