Place salmon, skin side down, on a paper towel lined plate. Pat tops dry with additional paper towels. Sprinkle with desired amounts of salt, pepper, onion and garlic powders. Cover. Refrigerate 1-2hrs.

Preheat oven to 350°F. Line a baking sheet with foil and lightly grease. Arrange salmon evenly spaced on baking sheet skin side down. Drizzle each with about 1 tsp olive oil and gently rub in. Place in oven. Bake 20-25 minutes.

While salmon is in oven make sauce. Heat a medium nonstick skillet over medium heat. Add 2 tbs butter. When melted add mushrooms. Sautée until tender, about 5 minutes. Stir in spinach, continue to sautée until wilted. About 2 minutes more. Transfer mushrooms and spinach to a small bowl. Return skillet to heat.

Add last tbs butter. When melted wisk in flour. Cook 2 minutes, wisking constantly. Wisk in half and half. Bring to a simmer until thickened, wisking constantly. Stir mushrooms and spinach into sauce along with chives. Stir in cayenne, then salt and pepper to taste.

When salmon is done remove from oven. Plate and drizzle with sauce. Serve with any desired sides. We chose couscous and steamed asparagus tonight. Enjoy!