Heat oven to 350°Fahrenheit/175°Celsius. Grease a 8.5×4.5" loaf pan and line it with parchment paper.
In a large bowl, whisk together pumpkin puree, vegetable oil, sugar, eggs, and vanilla until smooth. Add the baking powder, baking soda, spices, and salt. Mix until completely combined. Add flour and stir, stopping when you no longer see streaks of flour.
1 ⅓ cup canned pumpkin, 2 large eggs, 2 teaspoons vanilla extract, 8 tablespoons neutral oil, 1 ¼ cup white sugar, ½ teaspoon baking soda, 1 teaspoon baking powder, 1 teaspoon ground cinnamon, ½ teaspoon ground nutmeg, ½ teaspoon ground cardamom, pinch ground pepper, ¾ teaspoon fine sea salt, 2 cups all purpose flour
Mix in the chopped walnuts.
1 cup walnuts
Pour the batter into the prepared pan, tap on the counter to remove any air bubbles. Use a butter knife to draw a line down the middle of the loaf, this will help create a weak spot in the loaf and give a nicer looking crack down the middle of the bread.
Bake in the preheated oven for 65-75 minutes. A toothpick inserted should come out clean! Let the loaf cool completely in the loaf pan.
Maple Glaze
Whisk all of the maple glaze ingredients together in a medium bowl until smooth. If the glaze is too thin, add more confectioners' sugar. If it's too thick then drizzle in some more heavy cream.
1 cup confectioners' sugar, 2 tablespoons maple syrup, ¼ teaspoon vanilla extract, pinch salt, 1 tablespoon heavy cream
Pour the glaze on top of the cooled loaf pan and enjoy!
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Notes
My recipes have been developed and tested in cups and metric grams. I highly recommend using a weighing scale and measuring out your ingredients the metric way
Vegetable Oil: Use an unflavoured oil like vegetable oil, sunflower oil or canola oil.
Pumpkin: Make sure you're using 100% canned pumpkin puree and not pumpkin pie filling.
Walnuts: swap these out for pecans or leave them out entirely.
Pan: I'm using a USA loaf pan that is 4.5x8.5-inches, and not 9x5-inches. If you use a 9x5 loaf pan then it might not need as much time in the oven and the loaf won't be as tall.
Using Foil: if the top of the loaf starts getting too brown then loosely cover the top with foil.
Storage: Keep tightly wrapped in the fridge for up to 5 days. Let it come to room temperature before eating.