1.Combine mince, spice, onion and egg white in a large glass bowl. Shape mixture into 20 balls. Place on a plate. Cover with plastic food wrap; chill for 15 minutes.
2.Meanwhile, soak noodles in boiling water 5 minutes or until softened. Drain. Using kitchen scissors, snip into short lengths.
3.Spray pumpkin with oil. Heat a large frying pan over moderate heat. Cook and stir pumpkin for 3-4 minutes or until golden and just tender. Transfer to a plate.
4.Reheat pan. Cook and turn meatballs for 5 minutes or until browned. Transfer to a plate.
5.Add corn and asparagus to pan; cook and stir for 2 minutes. Add noodles, pumpkin, stock. sauces and garlic. Bring to the boil. Remove from heat.
6.Stir in meatballs. sprouts and coriander. Divide among bowls. Sprinkle with chili to serve.