Sugar cookies are one of the most popular offerings at Insomnia Cookies. The warm cookie delivery bakery is celebrating this beloved item on National Sugar Cookie Day, taking place Tuesday, July 9.

Customers can join in on the festivities and receive a special deal at any Insomnia Cookies location. All day, guests who show one of the bakery’s social media posts (Facebook, Twitter, Instagram, and Snapchat) about National Sugar Cookie Day will receive a free cookie with purchase.

“We are excited to offer one free cookie with purchase to our customers to celebrate the classic and delicious Sugar Cookie” says Insomnia Cookies Chief Marketing Officer Tom Carusona. “Our customers can redeem this deal by showing any of our in-store employees our social media post on any of our social platforms.”

The offer is valid until Monday, July 15 at 3 a.m. Insomnia Cookies currently has over 150 locations throughout the U.S.