This might be my favorite salmon recipe of all time! An old family recipe that made it's way here all the way from Sicily Italy. I found it posted in a magazine a several years back & it's been a personal favorite ever since!
Preheat oven to 350'. Heat 1 tsp oil in nonstick skillet over med heat until hot. Add salmon, rounded side down; cook until lightly browned, about 2 minutes. Transfer salmon to 13x9" glass baking dish. Sprinkle w/salt & pepper.
In same skillet, add remaining tsp olive oil & cook onion over med heat 5 min's or until tender. Add capers, vinegar & sugar. Cook 2 min's, stirring.
Spoon caper mixure over salmon, along w/olives. Cover with foil & place in oven. Bake 12-15 minutes or until salmon flakes easily when tested w/a fork.