Key Lime Tart

Ingredients

• 9 to 10 graham crackers (each 2 1/2 by 5 inches)
• 2 tables spoons plus 1/2 cup sugar
• 4 tablespoons unsalted butter melted
• 1 can (14 ounces) sweetened condensed milk
• 3/4 cup fresh lime juice (from 4 to 6 limes) or fresh or bottled key-lime juice
• 4 large egg yolks
• Pinch salt
• Slivered lime zest for garnish (optional)

Instructions

1. 1
   Preheat oven to 350 degrees. Process graham crackers and 2 tablespoons sugar in a food processor until fine crumbs form, add butter. Process until combined. Transfer mixture to a 9-inch tart pan with a removable bottom, pat into bottom and up sides. Place pan on a baking sheet, and bake until crust is fragrant and slightly colored, about 10 minutes.
2. 2
   Meanwhile, in a medium bowl, combine condensed milk, lime juice, egg yolks, remaining 1/2 cup sugar, and salt; whisk until smooth. Pour mixture into crust (warm or cool is fine0, leaving 1/8 inch at the top; return to oven. Bake until filling is set around edge but still slightly loose in center, 20 to 25 minutes.
3. 3
   Cool completely at room temperature, then refrigerate untilchilled, at least 2 hours. To store longer, cover and refrigerate, up to 2 days. Serve, garnished with zest, if desired.