The Shulhan Aruch (Orah Haim 202:7) rules that if dates are mashed and thus change form, the blessing would still be “Bore Peri Ha’Etz”. On the other hand the Rama (ibid.) says that the blessing for such a dish would be “Shehakol”. Rav Ovadia Yosef (Yabia Omer, vol. VII, § 29) sides with the Shulhan Aruch and says that even when a fruit or vegetable changes from its original form, it retains the blessing of that food. Normally, the principle of “Safek Berachot Lehakel”-that one should be lenient when there is a doubt regarding blessings-would dictate that one should recite the generic blessing of “Shehakol” on a questionable food such as mashed dates. Nevertheless, Rav Ovadia’s rationale is that even those that follow the opinion of the Rama would agree that one would fulfill one’s obligation Bediavad (ex post facto) by reciting the original blessing of the fruit or vegetable.
Notwithstanding, there are Moroccan rabbis who explain that the blessing over crushed fruits or vegetables is “Shehakol”. Rabbi Eliezer de Avila (Ma’ayan Ganim, Orah Haim, § 202) discusses marzipan, which is a paste made of crushed almonds, and says that its blessing would be “Shehakol“. This is also the position of Rabbi Yosef Messas (Mayim Haim, vol. I, § 284) and Rabbi Baruch Toledano (Kitzur Shulhan Aruch, § 199:25).
It should be noted that the blessing of “Shehakol” only applies if the fruit or vegetable lost any semblance of its original form, but if the general form remains, then it would retain its original blessing. As such, there is a discussion regarding the appropriate blessing that should be recited over the well known potato chips Pringles. On one hand, Pringles chips are made by mashing potatoes and therefore should necessitate a “Shehakol” blessing. On the other hand, the individual chips appear to be like slices of potato, and thus some opinions say that the blessing would revert back to the original “Bore Peri Ha’adama”. Practically speaking, since there is a doubt, one should recite “Shehakol” on Pringles.
Summary: The Moroccan custom is that “Shehakol” is recited over fruits and vegetables which change form, such as being mashed, crushed, etc.