Preheat oven or barbecue (grill) following instructions below.
Place each salmon fillet in the centre of one 12x18-inch heavy-duty aluminium foil piece. Divide the asparagus into 4 equal portions and arrange next to the salmon on each foil piece.
In a small bowl, mix together the melted butter, lemon juice, garlic and parsley. Pour the garlic/butter mixture evenly over each piece of salmon and asparagus; season with salt and pepper to taste, and top each pack with the parmesan cheese (about 2-3 tablespoons per pack).
Tent with foil, tightly sealing the edges to prevent the butter being leaked, to create a foil packet.
For The Oven:
Bake in preheated oven to 200°C | 400°F for 15 minutes, or until cooked to desired doneness.For a crispy top, broil for 1-2 minutes extra until Cheese is golden.
For The Grill:
Grill, covered on medium high heat for 15-20 minutes, or until cooked to desired doneness.
OPTIONAL: For a crispy top, broil for 1-2 minutes extra until Cheese is golden.
Serve with fresh lemon wedges and garnish with extra parsley.
Notes
If you don't like asparagus, you can easily pair this with zucchini or green beans.