Filling bubbling up over the sides of your pie crust can cause your pecan pie to stick to the bottom of the pie dish, making it nearly impossible to slice. To avoid this, use a pie crust that is large enough and folds over the edge of the pan. Also, be careful not to overfill your pie crust with filling. Other tips to help prevent your pecan pie from sticking are to spray the pie dish with baking spray and make sure your crust is not too thin and has no cracks.