Follow these simple steps to create amazing Key Lime Pie Bars:

1. Preheat the Oven: Set your oven to 350°F (175°C).
2. Prepare the Baking Dish: Grease an 8×8 inch (or similar size) baking dish or line it with parchment paper for easy removal.
3. Make the Crust: In a mixing bowl, combine graham cracker crumbs, granulated sugar, and melted butter. Stir until well mixed.
4. Press the Crust: Firmly press the mixture into the bottom of the prepared baking dish to create an even layer. Bake for 10 minutes.
5. Prepare the Filling: In another bowl, whisk together the eggs, sweetened condensed milk, key lime juice, lime zest, and salt until smooth.
6. Pour Filling into Crust: Once the crust is baked, remove it from the oven and pour the filling over the crust evenly.
7. Bake Again: Return the dish to the oven and bake for an additional 15-20 minutes, or until the filling is set but slightly jiggly in the center.
8. Cool Down: Allow the bars to cool at room temperature for about 30 minutes. Then, refrigerate for at least 2 hours to chill completely.
9. Slice into Bars: Use a sharp knife to carefully slice into squares, wiping the knife between cuts for clean edges.
10. Add Toppings: If desired, top with whipped cream and garnish with lime slices or additional zest.

These straightforward steps will lead you to create a batch of Key Lime Pie Bars that are not only delectable but also visually appealing.