Preheat oven to 400F, prepare muffin pan with papers or by greasing the cups.

Whisk together melted butter, pumpkin, milk, eggs, and brown sugar. In another bowl mix flour, baking powder and soda, spices and salt; pour pumpkin mixture into this dry mix and stir until just combined (lumps are good, over-stirring will ruin the leavening). Divide evenly among muffin cups, filling each to within a quarter inch of the top. Sprinkle brown sugar on top of each muffin, to taste.

Bake for approximately 20 minutes, test for doneness by checking to see if the top springs back when lightly pressed down.

Cool for 10 minutes, turn out on rack for remainder of cooling. Excellent served warm.