It’s hard to believe, but it wasn’t until the early 1930's* that peanut butter was listed as an ingredient in cookies. Today it seems like an absolute no-brainer, because once you’ve tasted a peanut butter cookie you know that cookie dough and peanut butter are the perfect combination. Once you’ve tasted a George’s Peanut Butter cookie you’ll know that a baking genius like George can take it up a notch! It’s all in the ingredients.
*The 1931 edition of Pillsbury's Balanced Recipes contains a recipe for Peanut Butter Balls. It instructs the cook to roll the dough into balls and press them down with the tines of a fork. This practice is still common today.
— From whatscookingamerica.net
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