the pretzel can also cover the salty. Don't they make a peanut butter filled pretzel? If so, these could be crushed and used as a crumb topping on a chocolate cake with carmel filling/icing. Sounds like a slight variation of a Turtle Cake.
INDYDEBI - that was the direction I was headed - chocolate cake with a carmel filling and a PB buttercream or a chocolate cake with a PB filling and a carmel buttercream with crushed pretzels as the topping. I was thinking chocolate covered pretzels, hadn't heard of PB filled ones.
I would need to be careful not to introduce too many chocolate flavors or 2 different PB flavors.
When you said turtle - I'm thinking I hav an excellent cheesecake I could make her. HMMM