Here's the basic of roasting the perfect pumpkin seeds. You'll come back to this one again and again. Adapted from Serious Eats.
2 cups pumpkin seeds
2 tablespoons vegetable, canola, or olive oil
Kosher salt and freshly ground black pepper
1. Carefully wash pumpkin seeds to remove all excess pulp. Transfer pumpkin seeds to a paper towel-lined rimmed baking sheet. Allow to rest at room temperature until completely dry, about 1 hour. To speed up the process, dry pumpkin seeds in a 200 degree oven, stirring occasionally, or use a hair dryer.
2. Adjust oven rack to center position and preheat oven to 325°F. In a large bowl, toss dried pumpkin seeds with oil and season with salt and pepper. Transfer to a rimmed baking sheet. Roast until pale golden brown, stirring occasionally, about 25 minutes total.