Heat oven to 375°F. Line baking sheets with parchment paper.
In the bowl of a stand mixer fitted with paddle attachment, beat butter and sugar on medium-high until light and fluffy.
Add egg and root beer flavour, mixing until thoroughly combined.
In a medium bowl, whisk together flour, salt, and baking soda.
Add ⅓ of the flour mixture to butter mixture, mixing until it’s almost all incorporated. Scrape down bowl. Repeat two more times with rest of flour mixture.
Form dough into 1" balls. (A cookie scoop is super helpful here.) Place on baking sheet, leaving 2" between each dough ball.
Bake for 6–8 minutes or until cookies have lightly browned.
Transfer cookies to a wire rack. Allow cookies to cool completely.
While cookies are cooling, make the filling. In a small bowl, beat all filling ingredients until smooth.
Once cookies are totally cool, it’s time to make sammiches! Spread filling on half of the cookies. Top with remaining cookies, gently pressing each cookie sandwich together.
This website uses cookies to ensure you get the best experience on our website. By continuing to use our website, you consent to all cookies in accordance with our Privacy Policy.Got it!Privacy policy