Begin boiling your water and getting your spaghetti noodles to cook until al dente.
Mix all of your ingredients together for your meatballs in a bowl with hands.
Once mixed, take a small amount and roll into a ball and place on a cookie sheet.
Preheat your oven to 350 degrees and bake for 12-15 minutes. If they are larger they may need to bake a little longer or closer to 20 minutes.
Once your meatballs come out of the oven, coat them with the spaghetti sauce and set aside.
Cut your bread loaf in half length wise, leaving one side attached, and coat both sides of the inside with garlic butter.
Place bread in a baking dish with the insides facing up and let bake until butter is melted and inside is lightly crisp.
Once bread has baked, add spaghetti on top of the bottom of it, top with meatballs and sauce, and then sprinkle some parmesan cheese on top.
Slice loaf into individual sandwiches and serve with salad for dinner! Enjoy!