Here's what you need:
4 large Portabella mushrooms, stem removed
1 pkg cream cheese
1 tbsp garlic
4 tbsp Parmesan cheese
1 1/2 cup frozen spinach
1 tbsp Olive oil
Salt, to taste
Preheat oven to 375. Brush mushrooms with oil and sprinkle with salt on both sides. Place on cookie sheet and bake for 10 minutes.
While that's cookin, mix up your spinach, cream cheese, parm cheese and garlic!
Remove mushrooms from oven and allow to cool for 2imutes.
Fill each mushroom with the mixture and sprinkle top with some mozzarella cheese if you want :)
Return mushrooms to oven to bake for 10 more minutes until it is heated through.