Preheat oven to 400 degrees F
Prepare the pie shell in a pie plate and prick the bottom and sides with the tines of a fork.
Bake the pie shell for 12 to 15 minutes. Let cool on a wire rack.
Mash 1 cup of berries in a saucepan. Add 1 cup water and bring to a boil. Simmer for 2 minutes.
Sieve berries to reserve the liquid and discard the berries.
Add the sugar and cornstarch to the empty saucepan and stir together. Add reserved strawberry liquid and stir together well. Cook on medium heat, stirring continuously until the liquid thickens and appears more clear, not cloudy. Set aside to cool.
Prepare the rest of the strawberries by removing the green tops but keeping them whole.
Spread about 1/4 cup of strawberry sauce over the bottom and sides of the cooled pie shell. Arrange 1/2 the hulled berries in the pie crust, top side down, bottoms facing up. Coat the berries with 1/2 the strawberry sauce, making sure to cover each one. Arrange the rest of the berries in the pie shell. Top with remaining strawberry sauce, coating well. Done!
Best to refrigerate for 3-4 hours before serving. Serve with whipped topping if using.