Preheat your oven to 350°F (175°C) while you gather your ingredients.

In a mixing bowl, combine graham cracker crumbs, granulated sugar, and melted butter. Press this mixture evenly into a greased baking pan.

In another bowl, whisk together the large eggs, fresh key lime juice, and sweetened condensed milk until smooth.

Carefully pour the filling over the crust in the pan. Bake for about 20 minutes or until the center is set but slightly jiggly.

Allow the bars to cool at room temperature. Transfer them to the refrigerator and chill for at least two hours.

After chilling, slice into bars and dust with powdered sugar before serving.