Preheat oven to 400 degrees F. Line a 13- x 9-inch baking dish with foil.
Rinse the salmon fillets under cold water to remove any icy glaze and pat them dry with paper towels. Brush both sides of each fillet with olive oil and place them in the prepared baking dish with the skin side down.
Transfer the baking dish to the oven and roast the salmon for 10 minutes.
Meanwhile, in a small mixing bowl, whisk together the maple syrup, soy sauce, melted butter, garlic, salt, and pepper. Remove the pan from the oven after the initial roasting time and pour the maple glaze evenly over each fillet. Return the pan to the oven and roast for an additional 10 to 12 minutes or just until the salmon flakes easily and the internal temperature reads 145 degrees F.
Spoon the glaze from the bottom of the baking dish over the salmon and a garnish of fresh chopped parsley, if desired.
