Preheat oven to 350 degrees F. Grease two standard size loaf pans.: Right away you will notice the expectation of warmth, and when you preheat to 350 degrees F the oven will give you that steady radiant heat that produces an evenly baked crumb. The air in the oven will feel dry and hot, and you may smell a faint metallic tang from the heating element as it comes up to temperature. Greasing the pans prevents sticking and encourages that browned edge that people love, while also making release easier. A common mistake is putting batter into an oven that is not fully preheated, which can cause uneven rise and a gummy center. If you forget to preheat, give the oven a solid 10 to 15 minutes to reach temperature before baking.
In a large bowl combine dry ingredients and mix to combine. Add in wet ingredients and stir until just combined, do not over mix.: By combining the 3 1/2 cups whole wheat pastry flour , 2 tsp baking soda , 1 1/2 tsp salt , 1 2 tsp cinnamon , and 2 tsp pumpkin pie spice first, you distribute the leavening and spices evenly so every bite tastes balanced. You will see the flour take on a slightly speckled appearance from the spices, and the aroma will lift as you whisk. This step matters because clumps of baking soda can create pockets of off flavors or odd textures. Avoid packing the spoon into the flour or leaving lumps, as uneven mixing will lead to inconsistent rise. If the flour seems lumpy, sift or press through a sieve to make a smooth base.
Transfer mixture to two prepared loaf pans. Bake for 50-60 minutes or until a toothpick inserted into the center of each loaf comes out clean. Remove from oven and allow to cool. Store covered. This bread also freezes well.: When you add the 1 cup brown sugar , 1/2 cup granulated sugar , 1 15 oz can pumpkin puree , 1/2 cup oil , 2/3 cup apple juice , 4 eggs , and 1/4 cup lentil puree the batter will become glossy and thick. Stir gently until you see no dry streaks, then stop. The batter should look cohesive and slightly lumpy, which is good. Over mixing activates gluten in the flour, producing a tough loaf rather than a tender one. If you do over mix, try to be gentle when folding and reduce mixing time in future batches.
Transfer mixture to two prepared loaf pans.: As you spoon the batter into the pans, you will notice a pleasing weight as the batter settles. Smooth the tops lightly with a spatula so the surface is even, which helps the loaf rise uniformly and form an attractive crust. The batter will be moist and opaque, and you may see small pockets of air. A typical error here is overfilling pans which leads to overflow or domes that crack excessively; ensure pans are only about three quarters full. If you do not have two pans, you can split the batter between two smaller pans and reduce baking time slightly.
Bake for 50 to 60 minutes or until a toothpick inserted into the center of each loaf comes out clean.: As the loaves bake, the kitchen will fill with the signature scent of pumpkin and spices, and the tops will turn golden brown with a slight crack in the center. You may hear a faint popping sound as air pockets expand, and the edges will pull away slightly from the pan. Use a toothpick to test; if it comes out with moist crumbs that cling, it needs more time. A common mistake is removing loaves at the first sign of color; they may still be underbaked inside. If the tops brown too quickly, tent with foil for the remaining time.
Remove from oven and allow to cool. Store covered. This bread also freezes well.: After pulling the loaves out, you will feel warmth rising from the pans and smell intensified spices. Let them cool in the pan for about 10 to 15 minutes to set the crumb, then transfer to a rack to cool completely. Cooling prevents crumb squish and makes slicing cleaner. Store the cooled loaf covered at room temperature for up to three days, or slice and freeze portions for longer storage. A common misstep is slicing when still hot which can lead to tearing, so allow adequate cooling for best texture.