how long to cook halibut on cedar plank
1 Place halibut steaks on the cedar plank. 2  Season to taste with pepper; spoon half the butter mixture onto the halibut. 3  Place the cedar plank into the grill; cook, with grill lid closed, for 20 minutes.4  Open grill; baste halibut with remaining butter mixture.rep. Cook. Ready In. 1  Place the cedar plank in water to soak, about 30 minutes. 2  Preheat an outdoor grill for medium-high heat and lightly oil the grate. 3  Stir butter, lemon juice, herbes de Provence, dill, tarragon, paprika, and garlic together in a small bowl.