A cinnamon roll (also sweet roll, cinnamon bun, cinnamon swirl and cinnamon snail) is a sweet pastry served commonly in Northern Europe and North America. It consists of a rolled sheet of yeast dough onto which a cinnamon and sugar mixture (and raisins or chopped grapes in some cases) is sprinkled over a thin coat of butter. The dough is then rolled, cut into individual portions, and baked. In North America, cinnamon rolls are frequently topped with icing (often confectioner's sugar based) or glaze of some sort. In northern Europe, nib sugar is often used instead of icing.
Comparable to the cinnamon roll is the honey bun, which is part of the donut family. It is not to be confused with a Danish pastry.
In Sweden, the country of its presumed origin, the cinnamon roll takes the name of kanelbulle (literally: "cinnamon bun") and on October 4, "kanelbullens dag" (Cinnamon roll day) is celebrated in Sweden. A German variety originating in Hamburg and its surroundings is the Franzbrötchen.
The size of a cinnamon roll varies from place to place, but many vendors supply a smaller size about 5 cm in diameter and a larger size about 10 cm to a side. The largest variety can be found in Finland, called Korvapuusti, where it can be up to 20 cm in diameter and weighing 200 grams (about 7 ounces).