Best Lemon Bars

Steps

• 1

  Heat oven to 350°F. Spray bottom only of 13x9-inch pan with cooking spray.
• 2

  In large bowl, stir cookie mix and 2 tablespoons flour. Cut in butter, using pastry blender (or pulling 2 table knives through ingredients in opposite directions), until mixture looks like fine crumbs. Press mixture in bottom of pan. Bake 13 to 15 minutes or until edges are lightly browned.
• 3

  Meanwhile, in medium bowl, mix egg yolks, condensed milk, 1 tablespoon flour, the lemon peel and lemon juice with whisk. Pour over hot crust. Bake 18 to 20 minutes longer or until filling is set. Cool on cooling rack 1 hour. Cover; refrigerate until chilled, about 1 hour.
• 4

  Sprinkle bars with powdered sugar. Cut into 6 rows by 4 rows. Store covered in refrigerator.