Lime Pistachio Squares

Crust:
1/2 stick butter, melted and cooled
2/3 cup shelled pistachios
1 cup graham cracker crumbs
1/4 cup sugar
1 TBS. grated lime zest

Filling:
2 large egg yolks
1 can sweetened condensed milk
1/2 cup fresh lime juice

For crust: Preheat oven to 350. Grease an 8 inch square pan. Line bottom with parchment paper, leaving a 2-inch overhang on two sides. In a food processor, finely grind pistachios with graham cracker crumbs, sugar, and zest. Blend in butter. Press mixture into bottom and 1/2 inch up sides of prepared pan. Bake until lightly browned 8-12 minutes. Cool crust for 30 minutes.
For filling: In a large bowl, whisk together egg yolks and condensed milk. Add lime juice and whisk until smooth. Pour filling into cooled crust and spread to edges. Bake until set, about 15 minutes. Cool in pan, then chill at least 1 hour before serving. Using parchment paper overhang, life out of pan and cut into 16 squares. Store in refrigerator.

* (from everyday food)