Ingredients

  • 1/3 cup almonds (about 2 ounces)
  • 1 1/4 cups all purpose flour
  • 3 tablespoons sugar
  • 1/4 teaspoon salt
  • 6 tablespoons (3/4 stick) chilled unsalted butter, cut into 1/2-inch pieces
  • 2 tablespoons (or more) ice water
  • 2/3 cup fresh lemon juice
  • 1/2 cup sugar
  • 3 tablespoons creme fraiche or sour cream
  • 4 large eggs
  • Lemon slices (optional)

Method

  • Finely grind almonds in processor.
  • Add flour, sugar and salt and process until blended.
  • Add butter and process until mixture resembles coarse meal.
  • With machine running, add ice water, 1 tablespoonful at a time, and blend until moist clumps form, adding more water if dry.
  • Gather dough into ball; flatten into disk.
  • Wrap in plastic; chill at least 1 hour and up to 1 day.
  • Preheat oven to 375F.
  • Roll out dough on floured surface to 12-inch round.
  • Transfer to 9-inch-diameter tart pan with removable bottom.
  • Fold dough overhang in, pressing to adhere and forming double-thick sides.
  • Pierce dough all over with fork.
  • Freeze 20 minutes.
  • Bake crust until set and light golden, piercing with fork if crust bubbles, about 30 minutes.
  • Cool crust on rack 15 minutes.
  • Maintain oven temperature.
  • Whisk lemon juice and sugar in medium bowl to blend.
  • Whisk in creme fraiche.
  • Whisk in eggs 1 at a time until well blended.
  • Pour mixture into crust.
  • Bake tart until filling is set, covering crust edges with foil if browning too quickly, about 35 minutes.
  • Cool tart completely in pan on rack.
  • Refrigerate until cold, about 2 hours.
  • (Can be prepared 1 day ahead.
  • Keep refrigerated.)
  • Remove pan sides.
  • Garnish tart with lemon slices, if desired.
  • Cut into wedges and serve.