This low-calorie, high-flavor dessert is a riff on the famous key lime pie, but without the extra fat. Indigenous to the Florida Keys, key lime production is limited due to a hurricane that wiped out numerous citrus groves in the 1920s. If you can't find key limes, you can substitute equal parts fresh lime juice with equal parts fresh lemon juice.
High in vitamin C and flavonoids that have been shown to stop cancer cell division, limes also contain a compound called limonoids, which also reportedly help cancer cells from proliferating.
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1 cup water
1/2 cup plus 1 tablespoon sugar
1/2 cup strained key lime juice*
3/4 cup low-fat Greek yogurt
crushed graham crackers, for serving
*Cook's note: If you can't find key limes, use 1/4 cup lemon juice and 1/4 cup lime juice
Stir the water and 1/2 cup sugar in a saucepan over medium heat until the sugar is dissolved. Whisk in the lime juice. Pour into an 8-inch square glass dish. Cover and freeze, stirring occasionally, until the liquid becomes slushy—about two hours. Using a fork, scrape the granita every 30 minutes until it turns into ice crystals. Cover and keep frozen, scraping occasionally so the crystals stay loose.
To serve, stir 1 tablespoon sugar into the Greek yogurt. Top servings of granita with a dollop of Greek yogurt and a sprinkling of crushed graham crackers.
More: Healthier Frozen Treats
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