My brownies without the mint layer are only 3.8 grams of net carbs per serving. (ketodietapp.com)
These brownies only have 3 grams of net carbs per serving! (staysnatched.com)
Note: I realize that some of these foods aren't 100 % lacking in carbs — but I consider under 1g net carbs per serving to be almost as good as zero. (mediatrendings.com)