1. Unroll 1 pie crust, press into 9-inch pie plate, and flute edges. Bake pie shell according to package directions; let cool.
2. In a medium saucepan over medium heat, whisk together remaining ingredients except whipped topping. Cook 5 to 7 minutes, or until thickened. Pour into pie shell.
3. Chill at least 4 hours, or until set.
4. Spread whipped topping over pie and serve, or cover and keep chilled until ready to serve.
Recipe and Image from the Mr. Food Test Kitchen
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