Unsalted Margarine (Best Option)
1:1 (1 cup margarine per 1 cup butter)Unsalted margarine is formulated to replicate butter's fat content and consistency, making it ideal for baking applications like chicken pot pie. The solid fat helps create steam pockets in the crust, essential for flakiness, and contributes to a rich mouthfeel in the filling.
To ensure best results, use margarine that is specifically designed for baking and keep it chilled before incorporating into the dough. Avoid margarine with high water content as it can affect crust texture.
Compared to butter, margarine produces a very similar texture and appearance, though the flavor may be slightly less rich but still complementary to the savory filling.