This was "Pies Week," where bakers made signature savory pies, a technical Strudel, and a showstopping croquembouche.
Depending on which version or regional numbering you are following, you might be looking for one of the following: Season 8 (Series 8, 2017) The Great British Bake Off - Season 08Eps15
Known as "Collection 5," this season follows the same 10-episode format as the UK Series 8. This was "Pies Week," where bakers made signature
If counting holiday specials as episodes, the list only reaches Episode 12 ("The Great Festive Bake Off"). This was "Pies Week