Prepare your Pie Crust: Ensure your 9-inch pie crust is fully baked and cooled. If using a frozen or unbaked crust, follow package directions or blind-bake until golden brown and cooled completely.
Fill with Strawberries: Wash and hull (remove the green tops) 3-4 cups of fresh strawberries. If strawberries are very large, you can halve or quarter them. Arrange the prepared strawberries evenly in the bottom of your cooled pie crust.
Make the Glaze: In a medium saucepan, combine the remaining 1 cup of strawberries (you can roughly chop these if they're very large), granulated sugar, cornstarch, and ¾ cup water.
Cook the Glaze: Place the saucepan over medium heat, stirring constantly. Bring the mixture to a boil. Once boiling, continue to cook and stir for 1 to 2 minutes, until the mixture thickens and turns clear. Do not overcook, as this can prevent the pie from setting properly.
Pour and Chill: Immediately pour the hot glaze evenly over the fresh strawberries in the pie crust.
Set: Carefully transfer the pie to the refrigerator. Chill for a minimum of 2 hours, but for the best results and a firmer set, chill for 4 hours or longer before slicing and serving.