Baking these Spiced Baked Pumpkin Muffins is easy and rewarding. Just follow these simple steps:

1. Preheat Your Oven: Preheat the oven to 350°F (175°C). Line a muffin tin with paper liners or lightly grease it.
2. Mix Dry Ingredients: In a large bowl, whisk together the flour, baking powder, baking soda, salt, cinnamon, nutmeg, and ginger until well combined.
3. Cream Sugars: In another bowl, combine the granulated sugar, brown sugar, pumpkin puree, vegetable oil, eggs, and vanilla extract. Mix until smooth and well blended.
4. Combine Mixtures: Gradually add the dry ingredients to the wet ingredients, stirring just until combined. Be careful not to overmix; a few lumps are fine.
5. Add Optional Ingredients: If desired, gently fold in the chopped walnuts or chocolate chips for added texture and flavor.
6. Fill Muffin Tins: Use a muffin scoop or spoon to fill each muffin cup about two-thirds full with the batter.
7. Bake: Place the muffin tray in the preheated oven and bake for 20-25 minutes. The muffins are done when a toothpick inserted into the center comes out clean.
8. Cool: Remove the muffins from the oven and let them cool in the pan for 5 minutes. Then, transfer them to a wire rack to cool completely.

These simple steps will guide you through the process of making these delicious muffins. Enjoy the smell of spices filling your kitchen!