Mix the water, 1/2 cup sugar, and cornstarch in a medium saucepan. Place over medium-high heat and bring to a boil, stirring constantly. Once boiling, cook for 1 minute then remove from heat. Transfer to a heat-proof bowl.
Stir in the strawberry gelatin until it is dissolved. Refrigerate the mixture for about 15-20 minutes, stirring occasionally, until the gelatin thickens, but isn't set.
Fold the sliced strawberries gently into the gelatin mixture. Pour the filling into the crust and refrigerate for at least 2 hours or until set.
Cut the pie into slices and serve with whipped cream, if desired. Cover any leftovers and store in the refrigerator.
Notes
Nutritional information includes 2 tablespoons of whipped cream per slice.
You can blind bake to pie crust up to 1 day in advance of making the pie. Just cover it securely with plastic wrap and store it in a cool, dry place.