Step 1: Prep for Baking
-
Preheat your oven to 350°F (175°C).
-
Grease a 9×13-inch baking pan or line it with parchment paper, leaving an overhang on two sides for easy removal.
Step 2: Make the Crust & Topping
-
In a large bowl, use an electric mixer to cream the softened butter and sugar until light and fluffy.
-
In a separate bowl, whisk together the flour, baking powder, and salt.
-
Gradually add the dry ingredients to the butter mixture, mixing on low speed until the dough is crumbly and just combined.
-
Set aside 1 cup of the crumb mixture for the topping. Press the remaining mixture firmly and evenly into the bottom of your prepared pan to form the crust.
Step 3: Whisk the Zesty Filling
-
Add the sweetened condensed milk, fresh lemon juice, and lemon zest. Whisk vigorously until the mixture is completely smooth and slightly thickened.
Step 4: Assemble the Bars
-
Pour the lemon filling evenly over the prepared crust.
-
Sprinkle the reserved 1 cup of crumb mixture evenly over the top of the lemon layer.
Step 5: Bake to Perfection
-
Bake for 25-30 minutes, or until the crumb topping is a light golden brown and the filling is set.
-
Place the pan on a wire rack and allow the bars to cool completely in the pan. For cleanest cuts, chill in the refrigerator for at least an hour after cooling.
-
Use the parchment paper overhang to lift the entire slab of bars from the pan.
-
Dust with powdered sugar if desired, then slice into squares with a sharp knife.
-
Serve and enjoy the bright, buttery goodness!
💡 Baker’s Notes & Tips
-
Fresh is Best: For the most vibrant flavor, always use freshly squeezed lemon juice rather than bottled.
-
Room Temperature Matters: Using softened butter is key for creaming it properly with the sugar, which creates the perfect crumb texture.
-
Clean Cuts: For picture-perfect bars, wipe your knife clean between each slice.
-
Storage: Store these bars in an airtight container in the refrigerator for up to 5 days. They are delicious cold or at room temperature!
