The exact origin is contested — and locals will argue this with you for hours, fondly — but the consensus is simple: garlic fingers were born in Atlantic Canadian pizza shops sometime in the 1970s or early 80s, when independent pizzerias were looking for a side or appetizer that used the same dough, the same oven, and almost none of the work.
What they accidentally invented was something more like a category. Not bread, not pizza, not breadsticks, not cheesy bread — just fingers. Cut into strips so you could share without committing to slices. Topped with butter and garlic so they tasted like the inside of a great Italian sandwich. Dipped in donair sauce because donair sauce was already on the table.
Today they're sold in nearly every independent pizza shop from Halifax to St. John's, often as the price-anchored thing on the menu — the side that ends up being the main event. Locals order them by reflex. Visitors order them once and then again.