My tried and true method that I've developed after years and years of roasting pumpkin seeds. It wouldn't be Halloween in our house without these Perfect Roasted Pumpkin Seeds.
Preheat oven to 325 F degrees. Spray a clean rimmed baking sheet with cooking spray.
Toss seeds in a bowl with the olive oil and garlic salt. Spread the seeds on the prepared baking sheet and bake for about 20 to 30 minutes or until golden brown, stirring about halfway through.
Prep time does not include time to dry overnight.