Cook the pasta according to the package directions.
Meanwhile, heat olive oil in large saucepan. Add onion, capsicums and carrot and saute until onion is golden. Stir in the spring onions and minced garlic and saute for 2 minutes. Stir in the baby corn, mushroom and seasonings and heat through.
Toss the cooked pasta with the vegetables and top with Parmesan cheese, if desired.