In a medium bowl, combine flour, butter, and sugar. Mix well, then press into a buttered 10-inch deep dish pie plate. (See recipe notes below about using different size pie plates.) Bake at 375°F for 10-15 minutes, until lightly browned.
Remove from oven and set aside to cool.
In a large saucepan, combine water, sugar, and cornstarch. Bring to a boil, stirring, until thick and clear.
Remove from heat; add strawberry jell-o.
Mix well and cool at room temperature for 10-15 minutes.
Fold in strawberries and gently stir to coat.
Pour coated strawberries into baked pie crust.
Refrigerate until completely set. Serve with whipped cream as desired.
