01 -
Lightly spray an 8” x 8” baking pan with a flour-based baking spray. Optionally, use a parchment paper sling to ease removal. Secure parchment paper with binder clips if needed.
02 -
Using a hand or stand mixer fitted with a paddle attachment, combine unsalted butter, all-purpose flour, and powdered sugar until the mixture forms light yellow loose crumbs. Press into the bottom of the prepared pan and chill in the freezer or refrigerator for 10–15 minutes. Preheat oven to 350°F.
03 -
Bake the chilled crust for 15–18 minutes at 350°F, or until light golden brown. Remove from oven and allow to cool slightly.
04 -
Grate lemon zest and squeeze lemon juice into a small bowl. Sift the all-purpose flour. Using a hand or stand mixer fitted with a whisk attachment, blend lemon juice, lemon zest, eggs, granulated sugar, and flour until smooth.
05 -
Pour the filling over the slightly cooled crust and bake for 25–30 minutes at 350°F, or until the top is mostly set but slightly jiggles at the center. Avoid overbaking to prevent a top crust from forming.
06 -
Cool the bars completely, then cover and refrigerate for at least 1 hour or overnight for best results.
07 -
Dust chilled bars with powdered sugar and cut using a sharp knife. Store in an airtight container in the refrigerator for up to 5 days.