Thanksgiving recipe: Pumpkin cheesecake crumble squares

Serve pumpkin pie as you like, but these might be more popular with your guests.
Pumpkin Cheesecake Crumble Squares
Yield: 20-24 squares
INGREDIENTS
Crust and Streusel:
1 cup unbleached all-purpose flour
3/4 cup golden brown sugar
1/2 teaspoon salt
1/2 cup (1 stick) chilled butter (cut into about 10 slices)
1 cup pecan halves
3/4 cup old-fashioned oats
Filling:
2 (8-ounce) packages cream cheese, room temperature
1 1/2 cups canned pure pumpkin puree
1 cup granulated sugar
1 large egg
2 1/2 teaspo