These foil packets are a simple and delicious way to cook salmon and asparagus together. Simply place a salmon fillet and some asparagus spears on a piece of foil, season with salt, pepper, and lemon juice, and fold the foil into a packet. Bake in the oven for about 15-20 minutes, until the salmon is cooked through and the asparagus is tender. These foil packets are perfect for a quick and easy weeknight dinner.