Lay a pie shield over the outer edges of the pie crust, so that it'll reflect the heat and prevent premature browning.
2. Make an Aluminum Foil Pie Shield or Foil Protector
Before baking the pie, start by cutting out 2-3 strips of aluminum foil (8-12 inches long and 2-3 inches wide).
Fold each strip lengthwise, so each strip is doubled.
Then wrap each strip around the edge of your pie crust, laying the foil on top of the edge and folding it down tight against the top of the pie plate both inside and out. It usually takes about 3 strips to cover the entire edge around.*
3. Make a Parchment Paper Pie Shield
The first step is to tear off a large sheet of parchment paper that is slightly larger than the pie dish.
Next, gently lay your pie dish over the parchment paper and trace its outline.
Then fold and cut the parchment paper square the same way you would an aluminum foil pie shield, leaving the traced side up for cutting.
Unfold the parchment paper and lay it over the pie crust, cutting any excess off from the outside edges of the parchment paper. Bake just as you would with the aluminum foil pie shield.
Notes
*You can also cut a square or circle out of a piece of foi just slightly larger than your pie plate, and cut a round circle of foil that you can then wrap around the edge of the crust.