Combine the first six ingredients in a small saucepan. Bring to a boil; cook and stir for 4-5 minutes or until thickened.
Place salmon skin side down on a greased 15-by-10-by-1-inch baking pan. Sprinkle with salt and pepper. Spoon glaze over salmon; top with oregano.
Bake, uncovered, at 400 degrees for 12–15 minutes or until fish flakes easily with a fork.