The Ultimate Lemon Butter Bar Recipes

Steps:

• Preheat the oven to 350 degrees F. Line a 9-by-13-inch baking pan with foil, leaving an overhang on 2 sides; spray lightly with nonstick cooking spray. Set aside.
• For the crust: Add the flour, cornstarch, confectioners' sugar and salt to the bowl of a food processor and pulse 10 times until combined. Add the cold butter and pulse until the mixture looks like coarse sand, about 30 times. (The dough will not come together in one mass.) Sprinkle the mixture evenly in the prepared pan and lightly pat it down. Bake, rotating the pan halfway through, until golden brown around the edges, 20 to 25 minutes.
• For the filling: Combine the eggs, yolks, sugar, flour, salt and lemon juice in a medium saucepan. Whisk continuously over medium heat, occasionally scraping down the sides and edges of the pan with a rubber spatula, until simmering and thickened, 4 to 5 minutes. Remove from the heat and whisk in the lemon zest and butter until combined.
• Lower the oven temperature to 300 degrees F. Pour the filling over the crust and bake until just set, 12 to 15 minutes.
• Place on a wire rack to cool to room temperature, then refrigerate until cold, about 2 hours.
• Use the foil overhang to lift the bars from the pan. Remove the foil and slice into squares. Dust with confectioners' sugar just before serving.

Steps:

• Preheat oven to 350 degrees F (175 degrees C).
• In a medium bowl, blend together softened butter, 2 cups flour and 1/2 cup sugar. Press into the bottom of an ungreased 9x13 inch pan.
• Bake for 15 to 20 minutes in the preheated oven, or until firm and golden. In another bowl, whisk together the remaining 1 1/2 cups sugar and 1/4 cup flour. Whisk in the eggs and lemon juice. Pour over the baked crust.
• Bake for an additional 20 minutes in the preheated oven. The bars will firm up as they cool. For a festive tray, make another pan using limes instead of lemons and adding a drop of green food coloring to give a very pale green. After both pans have cooled, cut into uniform 2 inch squares and arrange in a checker board fashion.

Steps:

• Position a rack in the center of the oven and preheat to 350 degrees F. Line a 9-by-13-inch glass baking dish with foil leaving a 2-inch overhang on two sides. Grease the foil and dish with 1 tablespoon butter.
• To make the crust, pulse the zest with 1/3 cup of the sugar in a food processor until the sugar is yellow and sandy, 1 to 2 minutes. Add 1 1/2 cups of the flour, the butter, cornstarch and salt and pulse until the dough comes together, about 1 minute. Press the dough evenly into the bottom of the prepared pan. Bake until the crust is golden at the edges and pale golden in the center, about 30 minutes. Transfer to a wire rack.
• Reduce the oven temperature to 300 degrees F. To make the filling, whisk the eggs and egg yolks with the remaining 1 2/3 cups sugar and the remaining 1/2 cup flour in a bowl until smooth. Whisk in 1 cup lemon juice.
• Pour the filling over the warm crust and return to the oven. Bake until the filling is just set, about 30 minutes.
• Cool the lemon bars on a wire rack, 30 minutes, then refrigerate uncovered until firm, at least 1 hour. Lift the bars out of the pan using the foil. Peel off the foil and cut into 24 bars. Dust with confectioners' sugar. Place a piece of gummy lemon candy on top of each square and serve.

Steps:

• Preheat oven to 350°F.
• In a bowl whisk together eggs and granulated sugar until combined well and stir in lemon juice and flour. Pour lemon mixture over hot shortbread. Reduce oven temperature to 300°F. and bake confection in middle of oven until set, about 30 minutes. Cool completely in pan and cut into 24 bars. Bar cookies keep, covered and chilled, 3 days. Sift confectioners' sugar over bars before serving.