Although stuffed squid is common in Italian households, I'm surprised how many friends have never tried them.
Squid's tubular shape makes them the perfect candidate for stuffing. Like shellfish, they secrete abundant flavor during cooking that enhances supporting ingredients especially tomato sauces. I also suspect the diversity of stuffing were largely created by the availability of abundant and leftover ingredients. Whatever the drivers, we're thankful.
With many variations of ingredients, the four basic ways I like to prepare stuffed squid is baked in olive oil, baked in tomato sauce, simmered in a pot of tomato sauce (served with pasta), and more recent, sautéed with a variety of mostly clear broth and sauces.
Mom's favorite was squid stuffed with day old bread flavored and baked in seasoned olive oil or a simple marinara sauce.
* You can substitute by finely chopping garlic sautéed in olive oil but you won't have the incredible flavors of garlic and seasoning infused olive oil, nor the simulated taste of roasted garlic. It's easy and is far worth the slight inconvenience.