In a large skillet, add butter, and heat over medium low heat. Add the garlic and rosemary, and sauté for about 7 minutes, until softened and fragrant.
To the skillet, add white wine, and simmer for 5-7 minutes, until wine has reduced by half or more.Add the cashew milk to the skillet, and warm until simmering.
Also called cauliflower au gratin, this dish starts with roasted cauliflower, drenched in a white wine cheese sauce, and topped with rosemary and crunchy breadcrumbs.