Preheat the oven to 350 degrees F.

In a bowl, lightly whisk together the brown sugar, butter, eggs, and vanilla. Do not overbeat!

Pour pie filling into your pie pan. This recipe makes enough for 2 pie crusts or 1 deep dish. After having cooked it in 2, I prefer the 1 deep dish to get a thicker pie filling. 

Loosely place aluminum foil around the pie crust to prevent the edges from getting too brown. Of course, unless you like browned crust in which case leave the foil off.

Bake pies on the middle rack of the oven for 45 minutes or until golden brown, a little longer for deep dish. The amount of time needed will depend on each oven but just know that once it no longer giggles and the top is golden it is done.