Mini Chocolate Tarts

Name: Mini Chocolate Tarts
Ingredients: 3 egg yolks; 6 Tablespoons very cold water; 3 Teaspoons vanilla extract; 4 Cups unbleached all-purpose flour; 9 Tablespoons granulated sugar; 3/4 Teaspoons salt; 1 1/2 Cup cold unsalted butter; 6 Ounces dark chocolate chips, preferably Hershey’s Special Dark Chocolate Chips; 8 Tablespoons unsalted butter; 3 eggs; 1/3 Cup sugar; 1/4 Cup caramel topping, preferably Hershey’s; 1 Tablespoon unsweetened cocoa powder, preferably Hershey’s; 30 pre-made 2-inch tart shells