Preheat oven to 375 degrees.
Rinse and dry mushrooms on a paper towel. Slice them in quarters and place in bowl.
Add olive oil.
Add lemon juice.
Add Parmesan cheese.
Stir gently to coat.
Spray foil covered pan with nonstick cooking spray and add mushrooms, spreading out over pan.
Bake in oven for 12 minutes. (I also made Parmesan chicken and Italian green beans - both in my recipe guides!)
Serve and enjoy!