Preheat your oven to 350°F (175°C). Prepare a standard 12-cup muffin tin by lining each cup with paper liners to prevent sticking.
In a large mixing bowl, add the pumpkin puree, vegetable oil, packed brown sugar, granulated sugar, eggs, and vanilla extract. Using a whisk, blend the ingredients together until the mixture is smooth and homogenous.
In a separate bowl, sift together the all-purpose flour, baking soda, baking powder, ground cinnamon, ground nutmeg, ground ginger, and salt to ensure even distribution of the leavening agents and spices.
Gradually incorporate the dry ingredients into the wet mixture. Stir gently until just combined, being careful not to over-mix the batter as this can lead to dense muffins.
If you choose to add nuts or chocolate chips, gently fold them into the batter, ensuring they are evenly distributed without overworking the mixture.
Using a spoon or ice cream scoop, fill each muffin liner about two-thirds full with the batter to allow room for rising.
Place the muffin tin in the preheated oven and bake for 20-25 minutes. To check for doneness, insert a toothpick into the center of a muffin; it should come out clean when they are ready.
Once baked, remove the muffins from the oven and let them cool in the tin for about 5 minutes. Then, transfer them to a wire rack to cool completely.
Notes
For an appealing finish, serve the muffins warm, lightly dusted with powdered sugar.