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. Dipped in donair sauce because donair sauce was already on the table.