Like the nuns - Bring water to a boil in a small saucepan, add pumpkin seeds, simmer about 5 minutes and turn off the heat. Let it cool, stir in baking soda or powder and let it sit over night. With your hands, rub the pumpkin seeds between your fingers and thumbs to try to release their skins. The skins will float in the water. Carefully pour out the water, cover again with clean water and drain again. With a slotted spatula, place the pumpkin seeds on a clean kitchen towel, rubbing them so the remaining skins come entirely off. Place the seeds in a bowl, cover them with water, rinse and place them on a towel to dry.
Like me - You can skip this part and use normal hulled pumpkin seeds or blanched almonds.
In a medium saucepan, place the sugar and 1/2 cup of water over medium low heat. Cook, keeping a close eye on it, until the sugar has completely melted into the water and appears to be a happily bubbling syrup (which should take anywhere from 8 to 10 minutes). Add the ground pumpkin seeds or almonds and stir well, creating a thick paste. Let the mixture cook for another 3 to 4 minutes --it will thicken and become even more pasty. Turn off the heat, pour the milk and stir well. It should be thick yet shiny and liquid. Remove the mixture from the heat and let it cool slightly. Use it to top the cookies but before it hardens. If it does harden, just heat the mixture over low heat with a tablespoon of water until it becomes runny again.
Once the cookies are no longer warm to the touch, add the cooled candied pumpkin seed or almond glaze on top with a spoon. 1 to 1 1/2 teaspoons of glaze is more than enough, it spreads as it settles.