Using a round object to knife, remove the pulp or flesh from the tomato rings and place them into a bowl.
Add in the parsley, eggs, salt, pepper, garlic, and flour. Whisk until well combined.
Add the butter to a pan over medium heat. Put the tomato rings in and scoop some of the mixture into each ring. They should be to the top of the ring.
Place a lid over the pan and allow the eggs to set.
Flip over and add a generous amount of mozzarella cheese over the top. Place the lid back on and cook until the cheese sets.
Plate, garnish with parsley, and enjoy.
