Lorna Doone Cookies are a tasty melt-in-your-mouth shortbread! With this easy copycat recipe, you can make the classic square-shaped Nabisco™ cookies right at home from scratch.
Cream the butter and sugar: To a mixing bowl or the bowl of a stand mixer with the paddle attachment, add the butter, margarine, powdered sugar, vanilla, and salt.
Shape and chill: Knead a few times to bring it together, then pat into a disc shape, wrap in plastic wrap and refrigerate for 1 hour to firm it up slightly.