Step 1

Cook potato in a saucepan of boiling water for 10 mins or until tender. Drain well. Return to the pan. Add the sour cream. Place over low heat. Use a fork or potato masher to mash for 2 mins or until smooth and fluffy. Season.

Step 2

Meanwhile, heat oil in a large frying pan over medium heat. Add corn and cook, stirring occasionally, for 5 mins or until golden and heated through.

Step 3

Stir corn into mash. Season. Wipe the frying pan clean. Heat over medium-high heat. Season steak. Spread evenly with mustard. Cook for 2 mins each side for medium-rare or until cooked to your liking. Transfer to a plate. Rest for 5 mins.

Step 4

Divide the mash and asparagus among serving plates. Arrange steak over mash. Sprinkle with chives to serve.