Chocolate Pumpkin Cheesecake (with an optional bourbon whipped cream topping)

Bahan-bahan (16 porsi)

• 1/4 cup unsalted butter (melted)
• 28 Oreo cookies
• 24 ounces cream cheese
• 1/3 cup sour cream
• 3/4 cup light brown sugar
• 1/2 cup white granulated sugar
• 3 tablespoons all-purpose flour
• 2 teaspoons pure vanilla extract
• 2 teaspoons pumpkin pie spice
• 1/2 teaspoon ground cinnamon
• 1/2 teaspoon salt
• 3 eggs (large)
• 15 ounces pumpkin puree (canned, not pie filling)
• 1 1/2 cups heavy cream (or thickened cream, cold)
• 3 tablespoons confectioners' sugar (or icing sugar)
• 1 -2 tablespoons bourbon
• 2 teaspoons vanilla extract
• 3 1/2 ounces milk chocolate (semi sweet block chocolate, at room temperature)