Don’t wash them! Apparently the flavor of the pumpkin seeds is found in the juice.
If only I knew that before I decided to roast mine.
The above video shows a simple recipe that anyone with basic cooking skills can do. All you really have to do is pull them out, dry them with paper towels, place them on a baking sheet, and bake them for 40 minutes with salt.
Advanced Recipe
For those of you that are more experienced at cooking here is a more advanced recipe that shows you how to make slightly sweet pumpkin seeds. Like the previous video it involves drying them out and baking them but after that you must season them and use a skillet
Fast forward to about 5:23 to see how to pan-roast them. Good luck and try not to burn your seeds!