Raw homemade meatballs must be thoroughly cooked before they can be consumed. All meatballs, whether precooked or raw, must be heated to an internal temperature of 160 degrees Fahrenheit for food safety. Baking or broiling gives meatballs a crispy, browned exterior that you don’t get with other methods. Preheat the oven to 350 degrees F and grease a baking sheet. Arrange the meatballs in a single layer. Place the tray in a center rack and cook for 25 to 30 minutes, until the internal temperature reads 160 F. To broil the meatballs, preheat the oven to 500 F, and place the tray 3 inches from the top of the oven. Pay close attention when broiling the meatballs, turning them every five minutes to prevent charring. Broil them for 20 minutes until the internal temperature reads 160 F.