Shoney's Strawberry Pie

1 1/2 cups sugar
2 cups 7-up or Sprite
2 pts. fresh strawberries
4 tbsp cornstarch
1 small pack strawberry Jello
2 browned gluten free pie shells or homemade GF pie crust (recipe here)
Whipped cream

Mix sugar, cornstarch and 7-up together and cook until slightly thick. Remove and add Jello. Stir well. Let cool in refrigerator. Add strawberries and pour into 2 pie shells.
Top with whipped cream.