Key Lime Tart

Directions

1. 1
   Preheat oven to 350 degrees.
2. 2
   Process graham crackers and 2 tablespoons sugar in a food processor until fine crumbs form, add butter.
3. 3
   Process until combined.
4. 4
   Transfer mixture to a 9-inch tart pan with a removable bottom, pat into bottom and up sides.
5. 5
   Place pan on a baking sheet, and bake until crust is fragrant and slightly colored, about 10 minutes.
6. 6
   Meanwhile, in a medium bowl, combine condensed milk, lime juice, egg yolks, remaining 1/2 cup sugar, and salt; whisk until smooth.
7. 7
   Pour mixture into crust (warm or cool is fine0, leaving 1/8 inch at the top; return to oven.
8. 8
   Bake until filling is set around edge but still slightly loose in center, 20 to 25 minutes.
9. 9
   Cool completely at room temperature, then refrigerate untilchilled, at least 2 hours.
10. 10
    To store longer, cover and refrigerate, up to 2 days.
11. 11
    Serve, garnished with zest, if desired.