Five-ounce cookies right out of the oven are now available in Patchogue.

Duchess Cookies officially opened its doors to the public Saturday at 18 East Main Street.

The rapidly growing boutique cookie shop chain proved to be a hit on its first day of business with customers in and out of the storefront throughout the day.

With every purchase, visitors received a free chocolate chip cookie.

Founder Sofia Demetriou’s ooey-gooey creations span from bestsellers like the Cookie Monster, a chocolate chip cookie encased in a blue sugar cookie to sweet combinations like the Unicorn Cookie, a sugar cookie with strawberry cheesecake inside.

After buying a cookie, Duchess Cookies provides a backdrop for an Insta-worthy photo of the dessert.

Scroll down for a glimpse inside Duchess Cookies, now open in Patchogue.

To read more about Duchess Cookies and the owner’s expansion plans, click here.

Top; Box of freshly baked Duchess Cookies.