Mash 1 cup strawberries with a fork or in a food processor and set aside.
In a small saucepan, whisk together sugar and cornstarch. Stir in water and mashed strawberries.
Bring to a boil over medium temperature, stirring constantly. Let the mixture boil and stir for 3 more minutes until thick and translucent. Set aside and let cool for 10 minutes.
In the meantime, arrange remaining strawberries in the pie crust. Cut some of the berries in half to make them fit better.
Pour cooled glaze over the strawberries. Make sure that all the berries are coated with the glaze and no dry spots remain. Chill pie for 2-3 hours until set.
Whipped Cream
Combine heavy whipping cream and powdered sugar. Whip at medium-high speed until soft peaks form. Serve pie with whipped cream.