Preheat your oven to 200° C (400° F).
Mix together the marinade of brown sugar, garlic, ginger, soy sauce, and mustard in a shallow bowl. Place the salmon in the marinade and marinate for 15 minutes.
While the salmon is marinating, lay down two sheets of foil on a baking sheet. On the first sheet, lay down the carrot sticks to make a layer about 2 sticks deep and about 6 inches across, on top of the carrots place the bell pepper cross way. On one end of the carrots place the broccoli, and on the other end, place the snow peas. Drizzle with a little olive oil and salt and pepper to taste and fold the foil over the veggys to make a sealed packet. set that packet off to one side of the next sheet of foil.
Drizzle some olive oil on the second sheet. Remove the salmon from the marinade and shake off excess and place on the olive oil on the foil.
Bake for 8-10 minutes or until the salmon easily flakes with a fork. Plate the vegetables and place the salmon on top, sprinkle with chopped spring onion, serve.