Which desserts require a new bracha during a Shabbat meal?

Do you have to bench before dessert or recite a  separate bracha? While there are certainly those   who bench before dessert, such is not generally  considered the recommended course of action. This   is because in the attempt to avoid the possibility  of making a braha levatala, a blessing in vain,   one ends up creating a situation of a bracha  she'aino tzricha, an unnecessary bracha.   For this reason, one should learn which desserts  require a new bracha and which don't. Fresh fruit,   nuts, and candy, for example, these require  a new bracha. Cooked fruits and liquids,   say milkshakes or Irish coffee, do  not. When it comes to mezonot items,   it depends. If something meets the three criteria  of pat haba'ah b'kisnin, namely that it's sweet,   crunchy, and has a filling, then it requires  a new bracha. There's more to this than we   can cover in this video. So be sure to ask  your own rabbi for guidance in this matter.