1.Place noodles in a medium heatproof bowl. Cover with boiling water; stand for 2-3 minutes or until tender. Separate noodles with a fork. Drain; place in serving bowls.
2.Heat oil in a medium saucepan over moderate heat. Cook tofu, in batches, for 2 minutes or until golden. Drain on paper towels. Add laksa paste to pan. Cook and stir for 1 minute or until fragrant.
3.Stir in stock, coconut milk, sugar and fish sauce. Bring to the boil. Add chicken and beans. Reduce heat; simmer for 2 minutes or until beans are tender.
4.Ladle hot soup over noodles in bowls. Top with sprouts, coriander and chilli. Serve at once with lime wedges.