Toasting the hazelnuts instead of leaving them raw results in maximum hazelnut flavor, so don't leave this step out! This nut milk is mildly sweet, but you could add a teaspoon or more of your sweetener of choice, if it's not quite sweet enough for you.
One word: incredible. A deeply flavorful and robust mushroom soup, topped with a thick slice of French bread covered in a layer of golden brown, melted mozzarella cheese. This is the meal you want to prepare for that special evening you've been anticipating.