Next company for you to check is Udi's. Some of their product lines are pn/tn free, but not all.
Loft house cookies have pn/tn free cookies, clearly marked on the label.
In terms of baking supplies, I use King Arthur flour, Dominos sugar, Rumford baking powder, Arm & Hammer Baking soda, McCormick's vanilla extract, Hershey's cocoa powder...
Mac might need to confirm some of these for pn.
There is also a Cici's pizza which might work for you...have only eaten at one once, and I can't say that I was impressed.