Eat them as a tasty snack or add them to salads, soups or granola. Like this recipe here.
Here's a quick how-to I found at all-recipes:
1. Rinse pumpkin seeds under cold water and pick out the pulp and strings. (This is easiest just after you've removed the seeds from the pumpkin, before the pulp has dried.)
3. Sprinkle with salt and bake at 325 degrees F until toasted, about 25 minutes, checking and stirring after 10 minutes.
4. Let cool and store in an air-tight container.