Preheat your oven to 350 degrees F. This ensures that your crust will bake evenly and become perfectly golden. While the oven heats, you can prepare the baking dish.
Spray an 8x8-inch baking dish with cooking spray. This step is crucial to prevent the bars from sticking and ensures an easy release when serving. Set it aside for now.
In a medium bowl, combine the graham cracker crumbs, melted butter, sugar, and a pinch of salt. Stir the mixture until the crumbs are moist and well combined. The mixture should hold together when pressed.
Press the crumb mixture firmly into the bottom of the prepared pan. Make sure it’s even and compact; this will create the sturdy base for your bars. Bake the crust for 10 minutes. You want it golden but not too dark.
Once baked, remove the crust from the oven and allow it to cool to room temperature. This is essential as you don’t want the filling to cook too quickly on a hot crust!
Meanwhile, combine the egg yolks and sweetened condensed milk in another bowl. Stir in the lime zest and lime juice, mixing until the mixture is smooth and starts to thicken slightly. You’ll notice a delicious tart aroma filling the air.
Pour the lime filling evenly over the cooled graham cracker crust. Spread it gently to ensure an even layer. This is where the magic begins!
Carefully place the blackberries over the filling, pushing them down a little. This helps incorporate them into the filling as it bakes, allowing their juices to meld with the lime.
Bake the assembled bars in the oven for about 15 minutes, or until the filling is just set. You’ll know it’s done when the edges look firm and the center has a slight jiggle.
Remove the bars from the oven and let them cool to room temperature. Once cooled, transfer them to the refrigerator for at least one hour. Chilling enhances the flavors and makes them even more refreshing.
Finally, cut into squares and serve chilled. Enjoy every bite of these delightful Blackberry Lime Bars! They’ll keep well in the refrigerator for 3 to 4 days, but I doubt they’ll last that long!
