CAULIFLOWER GRATIN WITH GRUYERE AND HAZELNUTS
Serves 5 to 6.
Note: To toast hazelnuts, spread on a rimmed baking sheet and bake in a preheated 350-degree oven until browned and fragrant, 6 to 8 minutes. Remove and when cool enough to handle, place nuts in a kitchen towel and rub together to remove as much of the skins as possible.
Butter for greasing the baking dish
1 medium head cauliflower (21/2 to 23/4 lb.)
Salt
1/2 c. crème fraîche
3/4 c. (3 oz.) grated Gruyère cheese, divided