Preheat oven to 375°F (190°C) and line a muffin tin with paper liners.
Whisk flour, brown sugar, baking powder, baking soda, salt, cinnamon, cardamom, ginger, and cloves in a bowl.
In another bowl, whisk melted butter, eggs, milk, and vanilla.
Pour wet ingredients into dry ingredients and mix just until combined.
Fill muffin cups 3/4 full with batter.
Bake 16–20 minutes until golden and a toothpick comes out clean.
Cool slightly before adding glaze if desired.
Mix glaze ingredients and drizzle over warm muffins.