For one, you'll certainly taste the difference. However, the answer to this question depends on what meatballs you compare to these delicious Swedish meatballs. If you're curious about how Swedish meatballs differ from the common Italian meatball for classic spaghetti, there's a pretty big contrast in flavor. Italian meatballs are often made with parmesan cheese and garlic, while Swedish meatballs are seasoned with allspice and nutmeg.  Furthermore, Italian meatballs are typically served on spaghetti noodles and topped with a tomato-based sauce. Swedish meatballs can be served on top of mashed potatoes or egg noodles and smothered with a creamy white sauce.