Combine beef, spinach, cheese, salt, pepper, garlic, egg, and bread crumbs together in a large bowl and mix with your hands.
Form small balls with your hands and place them on a plate.
When all balls are formed grab a frying pan and put your oil in it, set on med-high
Place your meatballs in the oil and cook on each side about 5 minuets or until cooked all the way through.
Place your cooked meatballs on a plate and dab off excess oil. Let cool and toss in with your sauce, pour over spaghetti and serve!