Blueberry pie is a sweet pie filled with blueberries. Blueberry pie was first eaten by early American settlers and remains a popular dessert in the United States and Canada. Similar desserts are prepared in Europe with bilberries. Blueberry pie made with wild Maine blueberries is the official state dessert of the U.S. state of Maine. Blueberry pie has been documented in the Appledore Cook Book in 1872. Later, several other various cookbooks such as Paul Richards Book of Breads, Cakes, Pastries in 1907 noted that berry pie was served in New York Hotels.