The surprise nestled inside these lemon-dill fish packets is a pair of shrimp. For kids who don't like anything green (and perfumy), omit the dill.
Kids' Steps: Kids can mash together the butter mixture in a bowl and help you wrap the fish in foil before grilling.
In a small bowl, mash together the butter, shallot, garlic, Dijon mustard, salt, and pepper with a fork.
Place 4 sheets of aluminum foil, each about 17 inches long, on your work surface. On each piece, center a fish filet, tucking in the ends so that the fish is an even thickness. Dot or spread the butter mixture over the filets. Sprinkle them with the lemon juice and top with a slice of lemon. Nestle 2 shrimp over each lemon slice and top with a sprig of dill.
Fold the foil into packets (for fun, you can make a fish shape by crimping one side of each packet in a C for a tail). Place the packets on a medium-hot grill for about 8 minutes or until the fish is just cooked through. Serves 4.