Ants on a log is a snack made by spreading peanut butter, cream cheese, ricotta cheese, or another spread on celery, pretzels or bananas and placing raisins, blueberries, or chocolate chips, etc.
[1][2] The classic peanut butter version of ants on a log is recommended as a healthy snack by the McKinley Health Center at the University of Illinois at Urbana-Champaign.
[3] Stuffed celery became a popular snack in the early 1900s after the inclusion of such recipes as Celery with Roquefort in the book Catering for Special Occasions with Menus and Recipes by Fannie Merritt Farmer.
However, many attribute the popularization of the combination to the Girl Scouts, where the recipe has been featured in several iterations of the Girl Scout Cookbook as far back as 1946, although at that time the recipe was titled "Celery Sticks" and did not include raisins.
The first time the "Ants on a Log" snack was mentioned in print was in an article published by the Star Tribune on February 15, 1959, which reads, "Anne Marie is working on snacks.