Step 1

Preheat oven to 325ºF. Place graham cracker crust on a baking sheet; set aside.

Step 2

Whisk together condensed milk, egg substitute and lime juice. Pour mixture into crust.

Step 3

Bake until center looks set but still slightly quivery, like gelatin, about 15 minutes. Cool completely on a wire rack. Transfer to refrigerator and chill completely, about 1 to 2 hours.

Step 4

Spread whipped topping over cooled pie. Cut into 10 slices and serve.