01 - 
                Sprinkle on extra herbs and more Parmesan right before you eat.
              
              
              
                02 - 
                If you're adding cheese, drop mozzarella over the meatballs in the last 15 minutes, put the lid back on, and let that melt.
              
              
              
                03 - 
                Put the lid on and cook on LOW for 6 to 8 hours. The flavors get cozy together and everything cooks right through.
              
              
              
                04 - 
                Evenly spoon the leftover marinara on top of the meatballs.
              
              
              
                05 - 
                Keep a bowl of water handy for dipping your hands so nothing sticks. Make meatballs about 4 cm (1.5 inch) big, using roughly 2 tablespoons for each. Pop them right into the slow cooker sauce. Stack them up in about 1 and a half layers.
              
              
              
                06 - 
                Drop the chicken in with everything else. Get your hands in there—blend without smashing, just until mixed.
              
              
              
                07 - 
                Crack the eggs in a big bowl and break them up with a whisk or fork. Toss in breadcrumbs, onion, Parmesan, garlic, your fresh herbs, salt, oregano, and pepper. Give it all a good stir.
              
              
              
                08 - 
                Dump half your marinara right into the bottom of a slow cooker (6 liters or bigger). Set it aside for now.