1. Preheat oven to 400°F.
2. Heat olive oil, on medium, for 1 minute in a 12-inch nonstick skillet.
3. Add onion and cover and cook 8-10 minutes or until onion is tender and golden brown, stirring occasionally.
4. Grease 13 x 9 baking dish.
5. Remove any bones from salmon.
6. Place salmon, rounded side up, in baking dish.
7. In small bowl, stir together curry powder, Dijon mustard and water.
8. Brush mustard mixture over salmon.
9. Bake salmon, without turning, for 15 minutes or until opaque throughout.
10. While roasting salmon, add ginger and cumin to onion and cook 1 minute, stirring.
11. Add cabbage and salt, mixing well.
12. Cover and cook 11-13 minutes or until cabbage is tender and begins to brown, stirring occasionally.
13. Spoon cabbage mixture onto plates, topping with salmon.