1

Preheat the oven to 325 degrees. Prepare a 9-inch pie pan by greasing it with butter or nonstick spray.

2

Mix the graham cracker crumbs, melted butter, sugar, and cinnamon in a bowl, and then transfer to the pie pan. Press the mixture evenly to the bottom and around the sides.

3

Place the pie crust into the oven and bake for 10 minutes, or until slightly browned. Remove from the oven and let cool.

4

In a mixing bowl, add the sweetened condensed milk, key lime juice, sour cream, and lime zest. Mix until smooth, and pour it on top of the graham cracker crust.

5

Place the pie back into the oven and bake for 10-13 minutes, or until tiny bubbles form on the surface. Remove from the oven and let cool.

6

Place in the fridge for at least a couple of hours up to overnight.

7

To make the whipped cream topping, pour the heavy cream, powdered sugar, and vanilla extract into a mixing bowl. Beat the mixture until light yet stiff peaks form.

8

Spread the mixture over the top of the pie, or place the whipped cream in a dessert decorating tool to pipe on top of the pie and decorate as desired with whipped cream and lime garnish. Enjoy!