After scoring the Spaghetti Squash, wrap it in foil and place in a 6 quart or larger slow cooker.
Mix together 1/2 cup of the Marinara with the beef, onion, garlic, seasoning, Parmesan cheese and eggs and form into 24 meatballs.
Carefully place meatballs around the squash, stacking as necessary but do not press them together.
Cook on high for 4-6 hours until meatballs are cooked to 165 degrees and you can easily insert a knife into the squash.
Carefully remove squash and set aside. Squash will be hot. Slice quash in half and scoop out seeds to discard. Allow to cook briefly before handling further.
Meanwhile, carefully break apart meatballs in the slow cooker and stir in remaining marinara sauce.
Then use a spoon or fork to scrape squash until squash "noodles" begin to break off and place squash noodles in the crock pot, salting to taste and stir.
To serve, plate squash and meatballs and top with cheese.