Step 1

Cook the spaghetti in a large saucepan of salted boiling water until al dente. Drain, reserving 2/3 cup of the cooking liquid. Return the spaghetti to the pan.

Step 2

Meanwhile, heat the oil in a large frying pan over medium heat. Cook the onion, stirring, for 2 minutes or until soft.

Step 3

Stir in the sour cream and reserved cooking liquid. Season and bring to the boil. Stir through the spinach, chopped dill, salmon and lemon juice. Cook for 1 minute or until heated through. Pour over the spaghetti and toss to combine. Sprinkle with reserved dill sprigs.