Homemade Coraline‑Inspired Oreo Cookies

Combine butter, powdered sugar, egg, vanilla extract, flour, cocoa powder, baking powder and a pinch of salt to form a smooth dough.

Flatten the dough on a work surface and cut it into button‑shaped cookies, as seen in the film.

In a separate bowl, beat together butter, powdered sugar, half a teaspoon of vanilla extract and a tablespoon of milk to create the creamy filling.

Assemble the cookies by sandwiching a dollop of filling between two baked cookie discs.