Ingredients

  • 1 1/2 cups all purpose flour
  • 1/4 cup sugar
  • 1/2 cup (1 stick) plus 1 tablespoon chilled salted butter, cut into 1/2-inch pieces
  • 2 tablespoons (or more) chilled whipping cream
  • 1 1/2 teaspoons vanilla extract
  • 3/4 cup whole almonds (about 4 1/2 ounces), toasted, cooled
  • 3/4 cup hazelnuts (about 4 ounces), toasted, husked, cooled
  • 3/4 cup walnuts (about 3 1/2 ounces), toasted, cooled
  • 3/4 cup light corn syrup
  • 1/4 cup (packed) golden brown sugar
  • 1/4 cup (1/2 stick) salted butter, melted, cooled
  • 3 large eggs
  • 1 teaspoon vanilla extract
  • 1/2 teaspoon almond extract
  • 1 cup semisweet chocolate chips

Method

  • Combine flour and sugar in processor.
  • Add butter and cut in, using on/off turns, until mixture resembles coarse meal.
  • Add 2 tablespoons cream and vanilla extract.
  • Using on/off turns, blend until moist clumps form, adding more cream by tablespoonfuls if dough is dry.
  • Gather dough together.
  • Press dough over bottom and up sides of 11-inch-diameter tart pan with removable bottom.
  • (Can be made 1 day ahead.
  • Cover and chill.
  • Let stand at room temperature 30 minutes before filling.)
  • Preheat oven to 350F.
  • Combine all nuts in processor; chop coarsely, using on/off turns.
  • Whisk corn syrup, brown sugar, and melted butter in large bowl to blend.
  • Whisk in eggs and vanilla and almond extracts.
  • Mix in chocolate chips, then nuts.
  • Transfer filling to prepared crust.
  • Bake tart until firmly set in center and top is deep golden brown, about 50 minutes.
  • Cool tart in pan on rack 30 minutes.
  • Push up pan bottom to release tart.
  • Serve warm or at room temperature.