Oreos

I occasionally buy mini Oreos for Miss M (and myself) to eat.  Recently she has been twisting them open (okay, I don't know if she's twisting them but she's getting to the middle) and eating the frosting out of the middle and leaving the cookie part on her tray.

How does she know to eat the middle of an Oreo?  She doesn't get it from me because I would rather have the cookie part (which is why we're an excellent team).  Also when I eat an Oreo I typically eat the entire cookie and I don't deconstruct it.

She's so serious about her cookie.