In a large saucepan, add sugar and water and heat over medium high heat. Slowly whisk in cornstarch. Incorporate well making sure there are no lumps.
Stir continuously for 4-5 minutes or until the mixture begins to thicken and turns slightly clear.
Remove from heat and whisk in the strawberry Jell-O package until it has dissolved completely. Let cool to room temperature.
Add in the strawberries to the Jell-O mixture, making sure they are evenly coated. Pour into the prepared graham cracker crust.
Place in the refrigerator and cool for 2-3 hours. Enjoy!