They do wonderful beignets! And they're nice folks.
I can't vouch for their beignets, but they still serve Joanna's legendary Meetinghouse Biscuits, which are a-freakin-mazing. Beignets are also on the dessert menu, but maybe someone else can weigh in who has tried them. I personally have been too full to get dessert any time I've dined there (must have been all those biscuits).
You can also order Meetinghousefrozen biscuits for delivery here: http://www.meetinghousebiscuitssf.com/
They have delicious biscuits here, along with the famous southern-style brunch. Yum.
I had a tasty, buttery biscuit here. Look for it on their brunch menu. Maybe Knead Patisserie in the back sells them separately? Hrm.