Once you try cooking fish in foil packets, you'll absolutely love this easy method! You can grill or bake it in foil packets, and if you are grilling, the fish won't fall apart and won't fall into the grill! And best of all, no cleanup!
Prepare 4 sheets of foil, put them on the counter and spray with non-stick cooking spray.
Slice the butter into 8 pieces.
Put each fish fillet in the middle of the foil sheet.
Sprinkle the fish with salt and pepper.
Put 2 pieces of butter on top of each fish fillet.
Put the lemon slices on top of the fish.
Fold the foil up from both ends to make closed foil packets.
If grilling, put the foil packets on the grill, close the grill and grill for 7 minutes per side.
If baking, put the foil packets on the baking sheet, put in the oven and bake for 15 minutes.
Unwrap 1 foil packet to check for doneness (the fish should be opaque and flake easily with a fork). If not done, wrap it back and cook the fish for 5 more minutes.