Slice one lemon into thin slices and deseed.
Break parsley into small sprigs.
Peel and thinly slice garlic.
Mix together all ingredients except salmon, lemon slices and parsley.
Preheat oven to 375° F.
Cut parchment paper large enough for salmon steak. The paper should be able to wrap around the steak completely.
Place parchment paper on large baking sheet, then place salmon on parchment paper.
Pour mixture out and brush onto salmon.
Lay lemon slices and parsley on salmon.
Close paper up at top, with a double fold.
Place in oven and bake until inner temperature reaches 130 to 140° F. Watch carefully to avoid overcooking. Cook time will be dependent upon thickness of the fish. The meat should flake away. If it is translucent, it is not cooked enough.
Remove salmon from oven and rest for 5 minutes. The salmon will continue cooking during the rest period.
While still in parchment paper, transfer to serving dish. Carefully remove paper.