Preheat your oven to 350°F (175°C). Prepare a muffin tin by lining it with paper liners or lightly greasing it with non-stick spray to prevent sticking.
In a large mixing bowl, combine the mashed bananas, eggnog, vegetable oil, brown sugar, granulated sugar, and eggs. Use a whisk or electric mixer to stir until the mixture is smooth and all ingredients are well blended.
In a separate bowl, whisk together the flour, baking soda, baking powder, ground nutmeg, ground cinnamon, and salt to ensure an even distribution of the dry ingredients.
Gradually add the dry ingredients to the bowl with the wet mixture. Use a spatula to fold the ingredients together gently until just combined. Take care not to over-mix, as this can lead to dense muffins.
If you like, fold in the chopped nuts and raisins or dried cranberries for an extra layer of texture and flavor. These additions are optional but enhance the muffins deliciously.
Using a spoon or an ice cream scoop, fill each muffin cup about two-thirds full with the batter to allow room for rising during baking.
Place the muffin tin in the preheated oven and bake for 18-20 minutes, or until a toothpick inserted into the center of a muffin comes out clean and dry.
Once baked, allow the muffins to cool in the tin for approximately 5 minutes. Carefully transfer them to a wire rack to cool completely, ensuring they don’t become soggy.
Notes
Serve the muffins warm for the best flavor! Dust them lightly with powdered sugar and a sprinkle of cinnamon for a festive touch.