If by quiche tin you mean one of those metal tins with fluted sides and removable base, then yes it will work great for a pecan pie. A tip for taking it out of the tin - sit the base over an upside down bowl that is narrower than the tin. Then gently ease the side off. You can then either put the pie with the metal base still there onto a serving plate, or, if you are brave, use a flat spatula to gently lift it and slide onto serving plate.