Scallion Tartlets

Directions

1. 1
   Preheat oven to 400F.
2. 2
   On a lightly floured surface, roll out and trim dough into two 9-inch squares.
3. 3
   Cut each piece into 4 squares; place on a parchment-lined baking sheet 2 inches apart.
4. 4
   Refrigerate or freeze until firm, about 30 minutes.
5. 5
   Toss together scallions, garlic, chile, walnuts, olives, and oil in a medium bowl.
6. 6
   Season with salt and pepper.
7. 7
   In a small bowl, whisk together egg yolk and ice water.
8. 8
   Brush 1/2-inch border around edges of dough squares.
9. 9
   Divide scallion mixture among squares, leaving 1/4-inch border; sprinkle squares evenly with cheese.
10. 10
    Bake until crust is golden brown, about 20 minutes.
11. 11
    Transfer to a wire rack to cool.
12. 12
    Serve warm or at room temperature.