Bourbon pumpkin cheesecake

Ingredients

• ¾ cup graham cracker crumbs
• ½ cup pecans finely chopped
• ¼ cup packed light brown sugar
• ½ stick (1/4 cup) unsalted butter, melted and cooled
• 1 ½ cups canned solid-pack pumpkin
• 3 large eggs
• ½ cup packed light brown sugar
• 2 tbsp heavy cream
• 1 tsp vanilla
• 2 tbsp bourbon liqueur or bourbon (optional)
• ½ cup granulated sugar
• 1 tbsp cornstarch
• 1 ½ tsp cinnamon
• ½ tsp freshly grated nutmeg
• ½ tsp ground ginger
• ½ tsp salt
• 3 (8oz) packages cream cheese, at room temp
• 2 cups sour cream (20oz)
• 2 tbsp granulated sugar
• 1 tbsp bourbon liqueur or bourbon (optional)
• Garnish: pecan halves