Preheat oven to 350 degrees F. Cut a large circle into the top of each tomato. Remove core, stems and seeds, leaving the wall of the tomato intact. In a small bowl, combine the salt, pepper and 1 tablespoon of parsley. Rub half of the mixture onto the inside wall of one tomato and the other half onto the inside wall of the other tomato.
In a skillet, heat the olive oil over medium heat. Add the green onions and garlic and cook until soft, about 5 minutes. Divide the mixture in half and place into the bottoms of the tomatoes. Divide spinach in half and place over top of the onion-garlic mixture. Divide the Parmesan cheese in half and place over the spinach. Crack a raw egg into each tomato as the top layer.
Place tomatoes on a greased baking sheet and place in the preheated oven. Bake for 25-30 minutes, or until egg is cooked through. Top with shredded Parmesan and fresh parsley and serve immediately.