https://archiveofourown.org/works/81000681
“No, why—”. Batman’s mouth clamped shut, face looking rather constipated. It was truly a sight, seeing the Big Bat himself rigidly shuffling in place with pursed lips and the air of a man who is regretting his entire existence. “Why…did you make me cookies?”. Now, Barry’s a rambler. It came with being a speedster, with a mind that ran and ran and never stopped. There’s countless ways he could answer this and countless amounts of reasons why that particular answer would work – would be the right one but out of all those, Barry's mouth moved, his heart having already chosen one from the start.
“As a thank you”.
Or the Flash found out Batman liked cookies and just rolled with it.
Hehe new fic ;p This was supposed to be posted on Bruce's birthday but the wordcount kept getting longer lmao. Please read it if you want! I also made a gif for this fic!