Pie crust should be room temperature or chilled. You can use a graham cracker crust or a prebaked pie crust. The pie crust needs to be deep dish.
In a saucepan put room temperature or cold water, sugar, and cornstarch. Whisk together making sure the cornstarch is free of lumps.
Turn the stove on to medium heat. Whisk continuously until the mixture thickens or the color becomes clear. It should no longer have a milky look to it. It will take about 4 minutes.
Remove from the heat and mix in the gelatin until the gelatin is completely dissolved and mixed in.
Cool the filling.
While the filing is cooling, hull and slice the strawberries.
Once the filling is cooled fold in the strawberries and mix well to coat the berries. Put into the pie crust.
Chill the pie. Before serving top with whipped topping.