Whole Wheat Flour (Best Option)
1:1 by volume (1 cup whole wheat flour per 1 cup all-purpose flour)Whole wheat flour contains the bran and germ, which add fiber and nutrients while maintaining the gluten structure necessary for a sturdy crust and effective thickening of the filling. The starches in whole wheat flour gelatinize similarly to all-purpose flour, allowing the filling to thicken properly.
When using whole wheat flour, consider adding a tablespoon of water or milk to the dough if it feels dry, as the bran absorbs more moisture. Also, knead gently to avoid a tough crust due to the bran’s interference with gluten development.
The final pot pie will have a heartier texture and a more complex flavor profile, with a slightly darker crust and a filling that thickens well but may be a bit denser than the original.