Pecans grow on pecan trees and walnuts grow on walnut trees... Stupid grows on stupid trees... what a dumb answer. This is directly from...
Depending on what the recipe is. Need more information.
I say walnuts! you use walnuts in banana nut muffins, sticky buns, fudge...and what about pecans??!! they don't have pecan banana nut muffins, pecan sticky buns, or pecan fudge!!!!!
yes, although pecans will have a slightly richer and buttery flavor.
Most of the time, yes.