are you referring to a biscuity aroma/flavor?
when I think pie crust I think biscuit and butter. you can get some biscuity character from Marris Otter, some from victory (so I've heard, never used it), Munich is more of a bready toasty thing but maybe with just a touch.
I wouldn't try for a buttery aroma,flavor. To me that just tastes like diacetyl.