Preheat the oven to 350℉. Line a muffin pan with 12 cupcake liners.
In a small mixing bowl, whisk together the dry ingredients including all pupose flour, baking powder, baking soda, pumpkin pie spice, and salt. Set aside.
1¼ cups all purpose flour, 2 teaspoons pumpkin pie spice, 1¼ teaspoons baking powder, ½ teaspoon baking soda, ½ teaspoon fine sea salt
In a separate large mixing bowl, whisk together wet ingredients including pumpkin puree, dark brown sugar, sugar, eggs, oil, and vanilla extract.
½ cup dark brown sugar, ½ cup sugar, 1 cup pure pumpkin puree, 2 large large eggs, ½ cup vegetable oil, 1½ teaspoons vanilla extract
Add in the dry ingredients into the wet ingredients and mix until combined. Avoid overmixing.
Fill the cupcake liners ⅔ of the way full. Bake for 20-23 minutes or until a toothpick comes out clean. Let cupcakes cool completely before frosting (very important or the frosting will melt!)