Ingredients

  • 1/2 cup granular sweetener for ice cream*
  • 2 tablespoons cornstarch
  • 1/8 teaspoon salt
  • 2 cups 2% reduced-fat milk
  • 1 cup half-and-half
  • 1 egg yolk
  • 1 teaspoon Key lime zest
  • 1/3 cup Key lime juice
  • 1/2 cup coarsely crushed graham crackers

Method

  • Whisk together first 3 ingredients in a large heavy saucepan. Gradually whisk in milk and half-and-half. Cook over medium heat, stirring constantly, 8 to 10 minutes or until mixture thickens slightly. Remove from heat.
  • Whisk egg yolk until slightly thickened. Gradually whisk about 1 cup hot cream mixture into yolk. Add yolk mixture to remaining cream mixture, whisking constantly.
  • Pour mixture through a fine wire-mesh strainer into a bowl, discarding solids. Cool 1 hour, stirring occasionally. Place plastic wrap directly on cream mixture; chill 8 to 24 hours.
  • Pour mixture into freezer container of a 1 1/2-qt. electric ice-cream maker, and freeze according to manufacturer's instructions; stir in Key lime zest, Key lime juice, and crushed graham crackers halfway through freezing. Let stand at room temperature 5 to 10 minutes before serving.
  • *Granulated sugar may be substituted.
  • Note: We tested with Whey Low 100% All Natural Granular Sweetener for Ice Cream. Get 20% off any time you order from
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  • Total time does not include freezing.