The peanut butter and jelly sandwich was first documented as a recipe by Julia Davis Chandler in 1901. She published the first known recipe combining peanut butter and jelly in the Boston Cooking School Magazine of Culinary Science & Domestic Economics. This sandwich became widely popular in the United States during World War II when it was used in soldiers' rations, due to its long shelf life and nutritional value. The basic ingredients—peanut butter, jelly, and bread—each have their own history, but the combination as a sandwich dates back to Chandler's early 20th-century recipe.
