Step 1

In a large bowl, beat the egg with a fork. Add the onion, bread crumbs, parmesan, parsley, garlic powder, salt, and pepper. Stir to combine.

Step 2

Add the ground beef to the bowl with the bread crumb mixture. Mix with your hands until combined.

Step 3

Pack and roll out 24 meatballs, using the palms of your hands. Meatballs should be slightly larger than a tablespoon.

Step 4

Spray a large slow cooker with cooking spray.  Place the meatballs in an even layer in the slow cooker.  Pour the pasta sauce over the meatballs.

Step 5

Cover and cook on low for 5-6 hours. If there is grease on top of the sauce after cooking, use a spoon to skim it off. Then, gently stir the sauce and meatballs. Serve warm.