Set oven to 375 degrees Fahrenheit. A baking sheet should be foil-lined.
Butter, lemon juice, lemon zest, garlic, dill, salt, and pepper, to taste, should all be combined in a small bowl.
Place the salmon on the prepared baking sheet, then fold the foil up on all four sides. Spread the salmon with the butter mixture. To thoroughly enclose the salmon and seal the packet, fold the foil's sides over it.
Place in oven and bake for 15-20 minutes, or until thoroughly done.