Preheat the oven to 350 degrees F. Take out a baking sheet, a long strip of parchment paper, twine, and your pesto sauce.
Place the salmon fillet on the center of the parchment paper.
Pour ⅓ cup of pesto sauce over the salmon (you can use more or less depending on the size of your salmon fillet).
Spread the pesto evenly over the salmon.
Fold the edges of the parchment paper over and use twine to secure the parchment.
Bake for 35 to 45 minutes, or until salmon is cooked through. Remove from oven and allow salmon to rest 5 to 10 minutes inside the parchment before unwrapping it and slicing it up.
Serve salmon with your favorite side dishes, or on top of a green salad.