01 - Preheat the oven to 350°F. Line a 12-cup muffin tin with paper liners or grease lightly.
02 - Whisk together the flour, baking soda, salt, ground ginger, cinnamon, cloves, and nutmeg in a large bowl until evenly mixed.
03 - In a separate bowl, whisk the vegetable oil and brown sugar until smooth. Add eggs one at a time, beating well after each. Stir in molasses and vanilla extract.
04 - Pour wet ingredients into the dry mixture. Add buttermilk and gently fold until just combined, taking care not to overmix.
05 - Divide batter evenly among prepared muffin cups. Optionally, sprinkle the tops with coarse sugar.
06 - Bake for 18 to 20 minutes until a toothpick inserted into the center emerges clean.
07 - Allow muffins to cool in the tin for 5 minutes before transferring to a wire rack to cool completely.