Heat vegan margarine on low to med. heat until melted. Add brown sugar, stir until dissolved.
Add pumpkin/apple butter, stir again.
Lastly, add the spices and stir thoroughly.
Spoon onto muffins,cupcakes, cinnamon buns or cake while still warm.
I created this while making pumpkin cupcakes without realizing I had no confectioner's sugar for the glaze. It was perfect, since I utilized the last couple spoonfuls of the pumpkin that I never seem to use. I've also made it with apple butter on cinnamon apple muffins.