The Best Lemon Tart Ever

Step 1
Combine butter, 1/2 cup sugar, vanilla extract, and salt in the mixing bowl of a stand mixer; mix ingredients thoroughly with a paddle attachment. Mix flour into butter mixture to make a smooth dough. Press dough into a 9-inch tart pan; refrigerate crust for 30 minutes.

Step 2
Preheat oven to 350 degrees F (175 degrees C).

Step 3
Bake crust until light golden brown, 15 to 20 minutes.

Step 4
Whisk sugar, eggs, lemon zest, lemon juice, and 1/2 cup flour in a bowl until smooth. Pour lemon filling into crust. Cover edges of crust with strips of aluminum foil to prevent burning.

Step 5
Bake tart until filling is set, about 20 minutes. Cool completely and dust with confectioners' sugar.