Taco seasoned Spaghetti Subs! The only additional ingredients you’ll need to add to your Grandmother's secret recipe are 3 table spoons per pound of ground beef of taco seasoning cooked into your spaghetti sauce, purchase 3 loaves of French bread, your favorite shredded cheese, (mozzarella, cheddar) and a dollop of salsa before you bite into your Spaghetti Sub!