To make these Raspberry Cream Sandwich Cookies gluten-free, replace the all-purpose flour with a certified gluten-free 1:1 baking flour blend. Confirm that the white chocolate, heavy cream, vanilla extract, vanilla bean, baking soda, sugar, butter, egg, salt, and raspberries are gluten-free and free from cross-contact warnings. Some white chocolate brands may contain gluten-based additives or be processed on shared equipment, so check labels carefully. Use clean baking sheets, mixing bowls, measuring tools, parchment paper, spatulas, food processor parts, sieves, and storage containers to prevent gluten contamination.