Preheat the oven to 350 degrees and line a baking sheet with aluminum foil. Coat the surface with olive oil or non-stick cooking spray.
Wash mushrooms, remove stem and scoop out gills.
Spread pizza sauce evenly over the inside of the mushroom cap.
Crack one egg into each mushroom. Bake at 350 for 25 minutes.
Top with mozzarella cheese and basil and return to oven for 5 more minutes.
Remove from oven, serve and enjoy!