I call this a weekend sandwich. Mushrooms sauteed in butter, herbs, spinach, and a little white wine piled on bread and topped with plenty of Gruyere cheese. It’s basically a gourmet grilled cheese that will take your weekend lunch to the next level.
Look for bags of chopped frozen spinach instead of the blocks of frozen spinach. The bagged kind is so much easier to measure out and use in smaller amounts.
Keywords: mushroom melt, gruyere melt, mushroom sandwich