Decorating sugar cookies—for Christmas ... adorable details, then this royal icing is an absolute must. Whether you're ...

For the cookies ... before decorating. For the royal icing: In the bowl of a stand mixer fitted with a paddle attachment, combine the powdered sugar, egg whites, and lemon juice.

What sets these festive sugar cookies apart, other than their beautiful decoration is the use of royal icing, a runny icing that hardens to solidify the maker's design. While still runny ...