2 cups all-purpose flour
1 cup (2 sticks) unsalted butter , softened
1/2 cup plus 1 tablespoon confectioner's sugar
2 cups granulated sugar
1 teaspoon baking powder
1/2 teaspoon salt
2/3 cups lemon juice
About 40 bars.
Preheat oven 350ºF.
In large bowl, combine flour, butter and the 1/2 cup confectioners' sugar; stir to form a soft dough. Press into bottom of 13 x 9 in. pan.
Bake 22-25 minutes or until edges of crust are golden brown. In small bowl, whisk eggs, granulated sugar, baking powder, salt and lemon juice until smooth. Immediately pour over hot crust. Return to oven and bake an additional 18-20 minutes or until edges are golden brown and center is set. Cool completely in pan on cooling grid. Dust cooled bars with remaining confectioners' sugar. Refrigerate before cutting.