Making your Pumpkin Banana Muffins is a breeze if you follow these simple steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C). Line a muffin tin with paper liners or grease it lightly.
2. Mix Wet Ingredients: In a large mixing bowl, combine the mashed bananas, pumpkin puree, melted coconut oil, granulated sugar, brown sugar, eggs, and vanilla extract. Mix until well blended.
3. Whisk Dry Ingredients: In another bowl, whisk together the flour, baking soda, baking powder, cinnamon, nutmeg, and salt.
4. Combine Mixtures: Gradually add the dry ingredients to the wet mixture, stirring just until combined. Avoid overmixing; a few lumps are okay.
5. Add Extras: If desired, fold in the chopped nuts or chocolate chips for an extra layer of flavor.
6. Fill Muffin Cups: Divide the batter evenly among the prepared muffin cups, filling each about 2/3 full.
7. Bake: Place the muffin tin in the preheated oven and bake for 20-25 minutes or until a toothpick inserted into the center comes out clean.
8. Cool: 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.

These steps will guide you in creating Pumpkin Banana Muffins that are fluffy and full of flavor!