In a separate mixing bowl, combine the flour, baking soda, salt, and pumpkin pie spice blend.
2 cup flour, 1 teaspoon baking soda, 2 teaspoon pumpkin pie spice, ½ teaspoon salt, 1 teaspoon baking powder
In a small bowl, whisk the pumpkin puree, vegetable oil, orange zest, eggs, sugar, and vanilla. Add the chopped walnuts and stir to blend.
1½ cup sugar, 2 eggs, 1 teaspoon vanilla extract, 1 tablespoon orange zest, 1 cup pumpkin puree, ½ cup vegetable oil, 1 cup walnuts
Add the blended dry ingredients to the pumpkin puree mixture and mix until combined. Spread half of the batter in the prepared loaf pan.
Pour the cream cheese mixture in the loaf pan next, spreading out evenly.
Add the remaining pumpkin batter on top of the cream cheese mixture.
Bake at 323° F for 65 - 75 minutes, or until a tooth pick comes out clean.
Remove from oven when done and set for 15 minutes before removing from loaf pan.