Trade in your case of the Mondays for a case of the cookies — at least for one day.

In celebration of opening 100 stores in 29 states, Insomnia Cookies will give away free cookies with any purchase from 11 a.m., Monday, Oct. 24, to 3 a.m. Tuesday,  Oct. 25, at its Midtown location, 930 Spring St. NW, according to its Facebook page.

The New York-based cookie empire was birthed in a dorm room at University of Pennsylvania by then college student Seth Berkowitz, according to Insomnia Cookies' website.

Beyond serving up cookies, brownies and other baked goods in the wee hours of the night, Insomnia delivers treats Monday through Friday.

Insider tip: If free cookies just aren't enough, Insomnia will also offer giveaways to cookie fiends that share their posts about their celebration using the hashtag #ICelebrate100.

Let the cookie party begin.