Start by preheating your oven to 375° F and prepare a large rimmed baking sheet with aluminum foil.
In a large mixing bowl, add your minced turkey and break it up as much as possible with a wooden spoon.
Add in your diced onion, minced garlic, bread crumbs, grated parmesan and two eggs. Mix well to combine.
Then, add in the dried basil, dried oregano, worcestershire sauce, salt & pepper. Mix, again to get all of the ingredients well combined.
Using a spoon, ice cream scoop or your hands; shape the mixture into balls (a little bigger than a golf ball).
Using your thumb, press down in the center of the meatball and place a piece of cheese inside. Close up my rolling the meatball or add more meat to seal the gap if needed. Repeat for the remainder of the turkey meatballs.
Arrange on the prepared baking sheet and bake in the oven for 20-25 minutes, or until an internal temperature of 165°F (74°C) is reached using a meat thermometer.