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1
Preheat oven to 350F.
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2
Make crust: Put butter, flour, confectioner's sugar, 2 tsp lemon zest, and the salt in the bowl of an electric mixer fitted with the paddle attachment.
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3
Mix on medium speed until blended.
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4
Transfer mixture to a 9 x 13-inch rimmed baking sheet.
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5
Press batter evenly into baking sheet.
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6
Bake 20-22 minutes till golden brown.
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7
Chill in freezer for 10 minutes.
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8
Let cool completely on a wire rack.
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9
Make filling: Whisk together whole eggs, 1 3/4 cups plus 2 tablespoons granulated sugar, the lemon juice, and 1 tablespoon plus 2 teaspoons lemon zest.
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10
Pour over crust.
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11
Bake for 18 to 20 minutes making sure the filling is set.
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12
Let cool completely on a wire rack.
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13
Keep oven at 350.
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14
Make meringue topping: Put egg whites and 1/2 cup granulated sugar in the clean bowl of an electric mixer fitted with the whisk attachment.
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15
Beat on medium-high speed until stiff peaks form.
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16
Using an offset spatula or the back of a spoon, spread meringue over filling, swirling to create soft peaks.
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17
Bake util meringue begins to brown, 8 to minutes.
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18
Let cool completely.
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19
Cut into bars.
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20
Bars can be refrigerated in an airtight container for up to 1 day.