Crust -1 ¾ cup graham cracker crumbs -3 tablespoons light brown sugar -½ teaspoon ground cinnamon -½ cup butter - melted Filling -3 8-ounce packages cream cheese - at room temperature -1 15-ounce can pumpkin puree - NOT pumpkin pie filling -3 large eggs + one egg yolk -¼ cup sour cream -1 ½ cups sugar -1 teaspoon ground cinnamon -¼ teaspoon ground cloves -⅛ teaspoon ground nutmeg -2 tablespoons flour -1 teaspoon vanilla extract Streusel -½ cup brown sugar -½ cup flour -¼ cup rolled oats -½ teaspoon ground cinnamon -1 teaspoon pumpkin pie spice -4 tablespoons butter - softened Topping -1 cup pecans -2 tablespoons butter -2 tablespoons sugar -½ teaspoon ground cinnamon -½ cup caramel sauce