Preheat oven to 350 degrees F. Line 16 muffin tins with paper cupcake liners.
In a small bowl combine flour, baking powder, baking soda, salt, ginger, cinnamon, cloves, and nutmeg. Stir to combine well.
Beat together melted cannabis butter, eggs, brown sugar, molasses, and milk until well blended.
Beat in dry ingredients until just until batter is smooth. Fill each lined muffin cup 3/4 full of batter.
Bake for 15 to 18 minutes or until tops are firm and toothpick inserted into the center comes out clean. Let cool completely before frosting.