Pour the hot coffee into a mug. Pour the milk into a glass measuring cup with a spout. Add the pumpkin puree, pumpkin spice and brown sugar and a pinch of salt. Stir. Place in the microwave until hot and steamy. Pour the mixture into a blender. Add the vanilla. Place the lid on and put a dish towel over the lid. Blend mixture for about 30 seconds until very foamy. (Note: If you don’t have a blender, you can simply whisk the hot milk with a fork or whisk briskly until it foams. It won’t be as foamy, but it works) Pour foamy milk into the cup over the hot coffee. Top with whipped cream and sprinkle pumpkin pie spice on top. Enjoy!