Chop the onion and garlic.
Prepare the meatballs.
Boil the spaghetti noodles in boiling water.
Add olive oil to a pan and sauté the onion and garlic.
Add tomato sauce and simmer.
Add the meatballs to the sauce and cook.
Mix the boiled spaghetti with the sauce and meatballs.
Serve the finished meatball spaghetti on a plate.