Step 1: Prepare the Graham Cracker Crust
Preheat the oven to 355°F (180°C).
Pulse graham crackers into fine crumbs using a food processor. If you don’t have one, place them in a ziplock bag and crush them with a rolling pin.
Mix the graham cracker crumbs, brown sugar, and melted butter in a medium bowl until moistened.
Press the mixture firmly into a lined baking dish using a spoon or spatula.
Bake for 10 minutes, then remove from the oven and let it cool slightly.
💡 Pro Tip: Letting the crust cool before filling prevents it from getting soggy!
Step 2: Make the Lemon Filling
Whisk together the eggs, yolks, granulated sugar, and flour in a large bowl until smooth.
Add the sweetened condensed milk, lemon zest, and freshly squeezed lemon juice. Mix well until thoroughly combined.
Pour the lemon mixture over the cooled crust.
Return the baking dish to the oven and bake at 325°F (163°C) for 25-30 minutes. The edges should be set while the center remains slightly jiggly.
Step 3: Cool, Slice, and Serve
Once baked, let the lemon bars cool at room temperature for 1 hour.
Transfer to the refrigerator and chill for at least 5-7 hours (or overnight for best results).
Use the parchment paper handles to carefully lift the dessert from the pan and place it on a cutting board.
Slice into 9 (3x3) or 16 (4x4) squares, wiping the knife between cuts for clean edges.
Lightly dust with powdered sugar before serving.