1-1/2 cups plus 3 tablespoons all-purpose flour, divided
3 large eggs
1-1/2 cups sugar
1/4 cup lemon juice
Additional confectioners' sugar
Preheat oven to 350°. In a large bowl, beat butter and confectioners' sugar until blended. Gradually beat in 1-1/2 cups flour. Press onto bottom of a greased 13x9-in. baking pan. Bake 18-20 minutes or until golden brown.
Meanwhile, in a small bowl, whisk eggs, sugar, lemon juice and remaining flour until frothy; pour over hot crust.
Bake 20-25 minutes or until lemon mixture is set and lightly browned. Cool completely on a wire rack. Dust with additional confectioners' sugar. Cut into bars. Refrigerate leftovers.
Test Kitchen tips
Bottled lemon juice works here, but for the most lemony lemonness, squeeze your own, fresh. Better yet, zest that lemon before squeezing, then add 1 teaspoon of the grated peel to the filling.
Line the pan with nonstick foil before baking, and the bars will come out easily when they're done. No cleanup needed!