Mixed Nut Chocolate Tart

I found this in an old TOH.

• Ready In: 55 mins
• Serves: 12

Ingredients

• 1 1⁄2 cups all-purpose flour
• 1⁄4 cup sugar
• 1⁄2 cup  cold butter, plus
• 1  tablespoon  cold butter
• 6  tablespoons heavy whipping cream
• 1 1⁄2 teaspoons vanilla extract
• 1  cup pistachios
• 1  cup pecan halves
• 3⁄4 cup  unblanched  almonds
• 3  eggs
• 3⁄4 cup light corn syrup
• 1⁄4 cup  packed brown sugar
• 1⁄4 cup butter, melted
• 1 1⁄2 teaspoons  almond extract
• 1  teaspoon vanilla extract
• 1  cup  milk chocolate chips
•  whipped cream

Directions

1. In a small bowl, combine flour and sugar; cut in butter until mixture resembles fine crumbs.
2. Add cream and vanilla, tossing with a fork until dough forms a ball.
3. Press onto the bottom and up the sides of an ungreased fluted 11-in. tart pan with removable bottom; set aside.
4. Place nuts in a food processor; cover and process until chopped. In a large bowl, whisk the eggs, corn syrup, brown sugar, butter and extracts until smooth. Stir in chocolate chips and nut mixture; pour into crust.
5. Place pan on a baking sheet. Bake at 350° for 35-40 minutes or until center is set. Cool on a wire rack. Store in the refrigerator.
6. Garnish with whipped cream.