Have the homemade spaghetti sauce simmering on the stovetop.
Preheat oven to 400 degrees.
Line a large baking sheet with parchment paper.
Mix all ingredients together in a bowl.
Using an ice cream scooper, scoop out similar sized balls and place on the baking sheet. I used about 2 scoops per meatball, which resulted in 14 entree-sized meatballs.
Bake for 30 minutes, slightly undercooking.
Add to the red sauce and cook together until reduced, about 30 more minutes.
Serve with grated Parmesan cheese and garnish with chopped Italian parsley.