In a large bowl, whisk together the flour, sugar, baking soda, salt, and cinnamon.
Set aside.
In another large bowl, mix the pumpkin, vegetable oil, water, and eggs until well combined.
Gradually add the dry ingredients to the wet ingredients, stirring until fully blended.
Fold in the peanut butter chips, chopped nuts, and raisins if using.
Evenly divide the batter among the three prepared loaf pans.
Bake for 55-65 minutes or until a wooden pick inserted in the center comes out clean.
Let cool in the pans for 10 minutes, then transfer to wire racks to cool completely.
Notes / Tips / Wine Advice:
Serving Tip:Enjoy warm with a spread of butter or a drizzle of honey for extra indulgence.Wine Advice:Pair with a sweet Riesling or a spiced mulled wine for a cozy fall treat.