Frozen Key Lime Cheesecake Bars

1. Line a large baking sheet with parchment paper. In a large bowl, add cream cheese, whipped topping, sugar, vanilla extract, lime zest and juice together.
2. With a stand or electric mixer, whip ingredients together till fluffy and thoroughly incorporated.
3. Lay 8 graham crackers on the baking sheet in a single layer. Scoop out filling equally onto each graham cracker. If the filling spills over the edges a little, that is fine.
4. Top each sandwich with another graham cracker to compete each sandwich.
5. Place in the freezer and freeze for at least 2 hours before serving. You can leave them in the freezer in a plastic bag for up to 3 days.