No Bake Pumpkin Shortbread Bars

Bahan-bahan (18 porsi)

• 1½ cups shortbread cookie crumbs
• 3 tablespoons butter, (melted)
• 2 tablespoons granulated white sugar
• Two 8-ounce packages cream cheese, (at room temperature)
• ¾ cup granulated white sugar
• One 15-ounce can unsweetened pumpkin puree
• ¾ cup sour cream
• ¾ cup milk
• One 3.5-ounce package instant vanilla pudding mix
• 3 cups Cool Whip, (thawed)
• ½ cup shortbread cookie crumbs