Step 1

Preheat oven to 200°C. Line a 15cm round (base measurement) by 5cm-deep fluted tart tin with removable base with the pastry and trim any excess. Place in the fridge for 15 minutes to rest.

Step 2

Cover pastry with baking paper and fill with pastry weights. Bake for 10 minutes. Remove paper and weights and bake for a further 6-8 minutes or until golden. Reduce temperature to 160°C. Spread the base of the pastry evenly with the mustard.

Step 3

Melt butter in a large frying pan over medium heat. Add the leek and cook, stirring occasionally, for 5 minutes or until leek softens. Remove from heat.

Step 4

Reserve 3 asparagus spears; coarsely chop remaining spears. Combine salmon, leek and chopped asparagus in a bowl. Spoon into pastry case. Whisk eggs, cream, dill and chives together in a bowl. Pour over salmon mixture. Bake in oven for 45 minutes or until filling is just set.

Step 5

Place remaining asparagus spears in a shallow heatproof bowl. Pour over boiling water and set aside for 2 minutes to soak. Drain well. Place on the quiche. Serve warm or at room temperature.