Preheat oven to 425 degrees. Line a baking pan with foil, and spray with cooking spray. Place salmon fillets on one side of the baking pan, and the asparagus on the other. (You could also use two separate pans if desired).
In a small bowl, mix together the ingredients for the dry mixture (the parmesan and the seasonings.) Lightly spray the asparagus with cooking spray and sprinkle 2 tbs of this dry mixture over the asparagus.
Mix the rest of the dry mix with the lemon juice and yogurt. Drizzle this mixture over the salmon, spreading it out evenly over the fish. Bake 15-20 minutes, or until fish is cooked through (opaque in the thickest part) and the topping is starting to get lightly golden on both the fish and asparagus. Enjoy!
Grill Option: If you would like to grill this recipe, you can just put the fish in one foil packet (spray with cooking spray first), and the asparagus in another and grill over medium high heat for 10-15 minutes, or until fish is cooked through and asparagus is tender.