Example: I first posted my recipe for bread pudding as Coffee-Nutella Bread Pudding. I changed it to Coffee- Nochella Bread Pudding because I wasn't sure. (I made up nochella)
I agree with Antonia James on this one. For my blog I'm frequently solicited by FoodBuzz sponsors to test recipes using their products. If I accept any samples and do use them on my blog I'm required to note a disclaimer that I was sampled by the manufacturer. But yes, the producers do want you to promote their products.
Trademarks exist to recognize and protect the association of words and images with particular products (ie. Nuttella with a particular chocolate hazelnut spread). You are only infringing a trademark if you are doing something that confuses the market about that association, or trying to pass off something you are selling as originating with the trademark owner. So naming Nuttella or something like it as an ingredient in a recipe would generally not be an infringement. Putting the trademark in a title could, I guess, attract the attention of a trademark holder if they thought there was some risk of creating confusion about one of its products. Seems like a pretty unlikely contingency though.