Rocky Road Brownie Pudding Pie

Ingredients

• 2 cups Walkers Chocolate Chip Shortbread cookie crumbs
• 2 tablespoons sugar
• Pinch salt, plus 1/4 teaspoon
• 2 tablespoons unsalted butter, melted, plus 1 tablespoon cut into pieces and softened
• 2 ounces semisweet chocolate, chopped
• 2 ounces unsweetened chocolate, chopped
• 2 large egg yolks
• 1/2 cup sugar
• 2 tablespoons cornstarch
• 1 3/4 cups whole milk
• 1 teaspoon vanilla extract, divided
• 3/4 cup miniature marshmallows
• 1 cup heavy cream
• 2 tablespoons confectioners sugar
• 1/3 cup toasted, chopped walnuts
• 1 1/2 brownie squares, diced into small pieces
• Chocolate curls for garnish, optional