I'm not sure what you mean by white...

I make a whitish "Monster Cookie" with Oatmeal, Peanut Butter, and M&M's (sort of looks like a choc. chip cookie color). It's cunchier than a normal choc. chip because of the oatmeal but it's still similar to it.

Hello. Thanks for the response.
The cookie part was white. Like sea foam white. Not tan like a regular choc chip cookie. The cookie was not flat, but kind of puffy, but crunchy at the same time.

Oh, its sound like maybe a meringue cookie with M&M's. Could that be it? They are often called Forgotten cookies.

Here's a picture of some to see if they look similar.

Here is a link that might be useful: Forgotten Cookies

Wow! I think this is what I have been looking for. Thanks so much.