Pumpkin Cheesecake Crumble Squares

Bahan-bahan (16 porsi)

• 1 cup all purpose flour
• 3/4 cup packed light brown sugar
• 1/2 teaspoon salt
• 1/2 cup (1 stick) chilled unsalted butter, (diced)
• 1 cup (4 ounces) pecan halves
• 3/4 cup old fashioned rolled oats.
• One 8-ounce package cream cheese, (at room temperature)
• 3/4 cup canned unsweetened pumpkin puree
• 1/2 cup granulated white sugar
• 1 large egg
• 1 1/2 teaspoons ground cinnamon
• 1 teaspoon ground ginger
• 1 cup sour cream
• 2 tablespoons granulated white sugar
• 1/4 teaspoon vanilla extract