Such a delight and so heavenly in taste!

Directions
Preheat your oven to 350°F (175°C). Line a 9x9-inch baking pan with parchment paper or lightly grease it.
In a medium bowl, combine the graham cracker crumbs, granulated sugar, and melted butter. Mix well until the crumbs are evenly coated with the butter.
Press the crumb mixture firmly into the bottom of the prepared baking pan to form an even crust. Bake the crust for 10 minutes, then set aside to cool.
In a large mixing bowl, whisk together the sweetened condensed milk, egg yolks, key lime juice, and key lime zest until smooth and well-combined.
Pour the lime filling over the baked crust, spreading it evenly with a spatula.
Bake for an additional 15-20 minutes, or until the filling is set and the edges are just beginning to brown.
Allow the bars to cool completely at room temperature, then transfer them to the refrigerator to chill for at least 2 hours before slicing.
Once chilled, cut into squares and top with a dollop of whipped cream if desired. Enjoy!
Variations & Tips
For those who may not be huge fans of lime, lemon juice and zest can be used as a substitute for a Lemon Pie Bar variation. If you have picky eaters, adding a layer of sweetened shredded coconut to the crust can give it an extra touch of sweetness. For a gluten-free option, use gluten-free graham cracker crumbs. To make the bars even more fun for kids, consider adding a few drops of green food coloring to the filling to give it that vibrant, lime-green color.