Ingredients

  • 1 (14-oz.) can sweetened condensed milk
  • 1 tablespoon loosely packed lemon zest
  • 1/2 cup Key lime juice
  • 3 large egg yolks
  • 1/4 cup buttermilk
  • Vegetable cooking spray

Method

  • Preheat oven to 325°. Whisk together first 3 ingredients in a bowl.
  • Beat egg yolks with a handheld mixer in a medium bowl at high speed 4 to 5 minutes or until yolks become pale and ribbons form on surface of mixture when beater is lifted. Gradually whisk in sweetened condensed milk mixture, and whisk until thoroughly combined; whisk in buttermilk. Pour mixture into prepared crust.
  • Bake at 325° for 20 to 25 minutes or until set around edges. (Pie will be slightly jiggly.) Cool on a wire rack 1 hour. Cover pie with lightly greased (with cooking spray) plastic wrap, and freeze 4 to 6 hours.
  • Top with Sweetened Whipped Cream.