Our classic lemon salmon recipe is first sprinkled with garlic salt and lemon pepper, then marinated in a mixture of melted butter, brown sugar, lemon juice, lemon zest, and garlic.
Mix garlic salt and lemon pepper together and sprinkle on salmon filets.
Melt butter. Mix melted butter with brown sugar, lemon juice, lemon zest, and garlic to make the marinade. Spoon over seasoned filets and allow to sit for a few minutes.
Place remaining marinade into a plastic zipper gallon bag or a glass baking dish.
Add salmon filets to bag or dish and turn to coat. Allow to marinate for 1 hour.
Preheat grill to 400 F.
Remove filets from marinade and set aside. Do not discard marinade.
Add marinade from the bag/dish to a small saucepan. Whisk in cornstarch to the marinade in the saucepan and heat over medium-high heat for a few minutes. Just enough to warm it through.
Place filets on grill flesh side down, skin side up. Cook for 15 minutes then turn over, skin side down and brush with remaining marinade. Cook another 10 minutes.
Notes
Start salmon flesh side down first. If you start with the skin side down, the fish will begin to cook and become flaky. Therefore when you flip it, the flesh will already be partially cooked and will fall apart on the grill grates.
We used two center cut filets, however, this will feed four people. To have nice individual filets, cut the raw salmon in half first so that you have 4 filets. Cutting already cooked salmon is possible but does not produce a clean line as the fish will be flaky.