Bake frozen pie crust according to the directions on the package. Remove from oven and allow to cool for 30 minutes. 

Meanwhile, in a small saucepan over medium heat, whisk together sugar, cornstarch and water. Bring to a boil, then reduce heat and simmer for 5 or so minute, until thickened.

Whisk in strawberry jelly. Remove from heat and set aside to cool. 

Add strawberries to the cooled pie crust, then pour over strawberry jelly mixture. Refrigerate for a few hours until set.