Q. When one attends a Kiddush on Shabbos morning after davening and they serve pastries and small cakes, should one be observant in “Lechem Mishne” and make a brocho (Mezonos) on two together, as one would do with Chalos?
A. Kitzur Shulchan Aruch (77: 17) rules one should keep Lechem Mishne even on small cakes. However other Poskim disagree. (Orchos Chaim 289: 5 – Da’as Torah ibid. – K’tzeih Hamatteh 625: 75, and others).
Piskei Teshuvo (274: 8) quotes that the minhag of RS”Z Auerbach zt”l was to keep Lechem Mishne.
Horav Shlomo Miller’s Shlit’a opinion is similar and he mentioned that he follows this minhag.
Rabbi A. Bartfeld as revised by Horav Dovid Pam, Horav Aharon Miller and Horav Chanoch Ehrentreu Shlit’a