Preheat the oven to 350°F. Spray a 9X5-inch loaf pan with baking nonstick spray. Line the bottom and 2 sides of the pan with parchment paper and spray again.
In a medium bowl, mix the flour, baking soda, salt, ground cinnamon, ground nutmeg, ground ginger, and pumpkin pie spice.
2 cups All-purpose flour, 1 teaspoon Baking soda, 1 teaspoon Salt, 2 teaspoon Ground cinnamon, ¼ teaspoon Ground nutmeg, ¼ teaspoon Ground ginger, ¼ teaspoon Pumpkin pie spice
Using a mixer, beat the melted butter (make sure it is cooled to room temperature), brown sugar, and sugar on high speed for 2 minutes.
½ cup Unsalted butter, ¾ cup Brown sugar, ¾ cup White granulated sugar
Add sour cream, vanilla, eggs, and grated carrots. Mix on medium until combined.
¼ cup Sour cream, 1 teaspoon Pure vanilla extract, 1 ½ cups Grated carrots, 2 Large eggs
Add in the dry ingredients and mix on low speed until just combined.
Pour the batter into the loaf pan.
Bake for 45-50 minutes until a toothpick inserted comes out clean.
Let the bread sit in the hot pan for 10 minutes before transferring to a cooling rack. Cool completely before icing.