Preheat oven to 350°F. Spray baking pan with non-stick spray. Place salmon fillets, skin side down, in a lidded baking dish. Season with salt and pepper. Mix marinade ingredients in a small bowl. Brush evenly over salmon fillets.
Bake salmon until just opaque in center, about 15 minutes, depending on thickness.
While the salmon is baking, make the Bearnaise. Melt one Tablespoon butter in a small saucepan. Sautee minced shallot until just tender. Add remaining butter and heat until melted and just warm. Combine all ingredients in a jar that is just wide enough to hold an immersion blender head. Blend until thickened.
I am not a health professional and nutrition data is calculated programatically. Accuracy may vary with product selection, calculator accuracy, etc. Consult a professional for the best information.