Preheat the oven to 500 degrees
Puree the onion, carrot, celery, and garlic in the food processor and place in a large mixing bowl.
Pulse the basil, parsley, and oregano in the food processor to chop.
Add the herbs, ricotta, eggs, bread crumbs, and spices to the bowl with the pureed vegetables and mix until well combined.
Add the meats and mix with your hands until just homogeneous.
Make a small patty and pan fry to test for seasoning and adjust as necessary.
Portion the meatballs using a size 40 ice cream scoop or approximately 2 tablespoons of meat mixture per ball.
Place the meatballs on a baking sheet sprayed with non-stick cooking spray; they can be touching.
Place the tray of meatballs into the refrigerator for 15-20 minutes to allow them to firm up a bit before baking.
Bake the meatballs at 500 degrees for 10 minutes, reduce the heat to 400 and cook another 15 minutes.