Preheat the oven to 400 degrees.
Transfer the pie dough to a slightly floured surface. Gently roll out the dough, rotating every few rolls, a quarter turn, to prevent it from sticking to the counter.
Roll the crust until you have approximately a 12inch circle.
Roll the dough into a tube onto itself to carefully transfer it to the pie dish.
Tuck the crust evenly into the bottom edges of the pan making it smooth.
Tuck the edges under themselves, into the pie pan.
Flute the edges with your fingers, or crimp with a fork.
Spoon blueberry filling into the pie, leaving any extra liquid in the bowl.
Sprinkle the crumb topping evenly over the top of the filling.
Place on a baking sheet and bake in preheated oven for 25 minutes.
Lower the temperature to 375 degrees and bake for an additional 35-45 minutes. (I cover the edges with foil at this point to prevent them from over cooking). Cook until mixture is bubbling and then cook another 10 minutes.
Remove from the oven and allow to cool for 3-4 hours at room temperature to solidify and thicken up before serving.