Which cookie has peanut-shaped wafers and a peanut butter filling?

Nutter Butter is the cookie with peanut-shaped wafers and a peanut butter filling.

The sandwich cookie was introduced by Nabisco in 1969. Its most recognizable feature is the pair of ridged, peanut-shaped biscuits surrounding a smooth or slightly textured peanut butter-flavored crème. The shape makes the product visually different from round sandwich cookies such as Oreos.

Nutter Butter is associated with peanut flavor in several forms: the biscuit contains peanut-related ingredients, and the central filling supplies the stronger peanut butter taste. The brand has also appeared in other formats, including bite-sized cookies and wafer-style variations.

Nutter Butter is sometimes confused with peanut butter cookies, but the two are different products. A peanut butter cookie is generally a single baked cookie flavored with peanut butter, while Nutter Butter is a manufactured sandwich cookie made from two shaped wafers and a filling. Because it contains peanuts, it is also a notable allergen-containing snack.