Cast-Iron White Chocolate Tart

Directions

1. 1

   Preheat oven to 375°. Place biscotti, amaretti cookies and sugar in a food processor; pulse until coarsely ground. Add butter; pulse until combined. Press crumb mixture firmly into bottom of a 9-in. cast-iron or other ovenproof skillet. Bake until lightly browned, 12-15 minutes. Cool on a wire rack.
2. 2

   In a small heavy saucepan, mix 1/4 cup sugar and flour. Whisk in milk. Cook and stir over medium heat until thickened and bubbly. Reduce heat to low; cook and stir 2 minutes longer. Remove from heat.
3. 3

   In a small bowl, whisk a small amount of hot mixture into egg yolks; return all to pan, whisking constantly. Bring to a gentle boil; cook and stir 2 minutes. Remove from heat. Stir in white chocolate, butter, orange extract and 1/4 teaspoon salt until chocolate is melted.
   Preheat oven to 350°. For meringue, in a large bowl, beat egg whites with remaining dash salt on medium speed until foamy. Gradually add remaining 1/4 cup sugar, 1 tablespoon at a time, beating on high after each addition until sugar is dissolved. Continue beating until soft glossy peaks form.
4. 4

   Transfer hot filling to crust. Spread meringue evenly over filling, sealing to edge of crust. Bake until meringue is golden brown, 12-15 minutes. Cool 1 hour on a wire rack. Refrigerate at least 6 hours before serving.