1.Cook pasta in a large saucepan of boiling salted water for 8 minutes or until almost tender. Add asparagus; cook a further 1 minute until tender. Drain. Rinse under cold water; drain.
2.Process basil, pine nuts, garlic, oil, juice and the water until finely chopped. Add avocado and half the feta; process until smooth. Season to taste.
3.Place pasta, asparagus and pesto mixture in a large bowl with prawns; toss gently to combine.
4.Divide pasta among bowls; top with remaining feta and extra basil leaves.
Asparagus spears vary in thickness; if the ends are really thick, peel them from the bottom up to within 5cm (2 inches) of the tips.
Note
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