I LOVE Stuffed mushrooms. I love spinach dip even more! This is a piece of both world. These mushrooms are great and can be filled with so many different things. These are one of a few variations of mushrooms that I will post and all can be baked at the same time and put out for guests for Thanksgiving and Christmas. If you have left overs, feel free to use that as well. These do make a lot of mushrooms if several kinds are made but leftovers can be stored in the fridge as a snack for the next day, or you can scale back the recipe.
Combine 1/2 cup cream cheese, 1/2 cup grated parmesan cheese and 1/2 teaspoon ground nutmeg; season with salt and pepper. Stir in one 10-ounce box frozen spinach, thawed and squeezed dry. Fill 16 white stuffer mushrooms. Bake in a 375° oven for 15 minutes.