Warm Chocolate Praline Tart with Caramel, Chocolate Sauce, and Vanilla Ice Cream

INGREDIENTS

• 1 recipe Chocolate Tart Crust, recipe follows
• 8 tablespoons (1 stick) cold unsalted butter, cut into pieces
• 1/2 teaspoon lemon juice
• 6 tablespoons light brown sugar
• 2 cups milk
• 1 1/4 cups all-purpose flour
• Pinch salt
• 1 large egg, lightly beaten
• 2 tablespoons to 1/4 cup milk
• 2 cups coarsely crumbled Chocolate Pralines, recipe follows
• 6 tablespoons sugar
• 1 tablespoon all-purpose flour
• 1/2 cup sugar
• 1/4 teaspoon salt
• 2 ounces semisweet chocolate chips
• 1/4 cup light corn syrup
• 2 tablespoons unsalted butter
• 3/4 cup sugar
• 1 recipe Chocolate Sauce, recipe follows
• 3/4 cup confectioners' sugar
• 6 large egg yolks
• 1/2 cup light brown sugar
• 1/4 teaspoon pure vanilla extract
• 2 cups heavy cream
• 1/2 pound semisweet chocolate chips (1 1/3 cups)
• 1/4 cup unsweetened cocoa powder
• 1 tablespoon unsalted butter
• 1 vanilla bean, split in 1/2 lengthwise
• 1/4 cup heavy cream
• 1 tablespoon dark rum
• 3 large eggs, lightly beaten
• 1/2 teaspoon pure vanilla extract
• 2 tablespoons water
• 1 recipe Caramel Sauce, recipe follows
• 1/2 cup heavy cream
• 3/4 cup chopped pecans
• 3/4 cup half-and-half
• 1 recipe Vanilla Ice Cream, recipe follows, or good quality store bought ice cream
• 1/4 cup dark corn syrup