Start by putting in a bowl the ground beef, parmesan, chopped parsley, 1 egg, breadcrumbs, garlic, salt, crushed black pepper, chili flakes and nutmeg.
Mix all the ingredients well and start rolling the assembled ingredients into a walnut-sized balls. This should yield around 54 meatballs.
Heat a frying pan with 4 tablespoon of extra virgin olive oil and rosemary. Once the oil is warm, add the meatballs.
Cook the meat balls, add salt and continue until they are browned on all sides, 10 minutes.
Your meatballs are now ready to be served, either as a meal accompanied by sides or as an appetizer accompanied by the sauces below.
To make the tomato sauce:
In the meantime, warm the olive oil and garlic in asmall saucepan, and add the chopped tomatoes.
Cook until the tomatoes have melted into a sauce.
To make the spicy mayo sauce:
Mix the mayo in a small bowl with the minced garlic and the spices.
Notes
You can use different varieties of meat - you can mix the beef with pork or veal or both. You can add cold cuts as well.
You can use different types of cheese, though I recommend a hard cheese. If you want to stay in the Italian territory, I recommend Pecorino or aged Asiago. If you want to explore other varieties, I recommend Manchego or Vintage Gouda.
In terms of spices, you can mix and match whatever you prefer. If you want a more spicy hint, jalapeno powder will work well instead of dried chili flakes. Instead of nutmeg, you can try allspice, cumin or coriander. For more suggestions read the post.
The meatballs can be frozen - they will stay good for 8 weeks. You should let them thaw and then heat them in a pan with a bit of oil. I do not recommend microwaving as it will dry them out.
The nutritional values are based on the meatballs only - it excludes the sauces.