1.Spread tofu, in single layer, on absorbent-paper lined tray; cover with more paper, stand 10 minutes.
2.Meanwhile, in a small bowl, combine miso paste, sugar and water.
3.In a wok, heat oil on high. Stir-fry shallot, asparagus and beans until vegetables are tender. Add miso mixture and tofu; stir-fry until hot, season to taste.
4.Meanwhile, in a small frying pan, heat extra oil; fry egg, one side only, until barely set.
5.Serve stir-fry topped with egg, chilli and onion.