In a large bowl add ricotta, ⅛ cup chopped fresh parsley, ½ cup grated pecorino romano, ½ tsp cracked black pepper, salt, crushed red pepper flakes, and 1 cup shredded mozzarella. Mix that together until combined and set it aside.
Grease a 9x13 deep baking dish and add in the frozen meatballs. Now, take that ricotta mixture and roll it into balls about the same size as the meatballs. Place the ricotta balls spaced out in between the meatballs.
Next, pour the jar of marinara sauce and the can of tomato sauce evenly over the top (make sure the sauce is fully covering the top. Then, shake ½ tsp of cracked black pepper and Italian seasoning over the top. Evenly sprinkle a ¼ cup of grated pecorino romano and 1 cup of shredded mozzarella over the top. Lastly garnish the top with ⅛ cup of chopped fresh parsley.
Bake in the oven at 400°F for 30 - 35 minutes or until the sauce is piping hot and bubbling and the cheese is melty. Serve over Texas toast or pasta! Enjoy!