Rinse pumpkin seeds and remove any bits of pumpkin pulp that haven't come loose.
Place the rinsed seeds in a large pot and fill with water and 1 teaspoon of salt. Bring to boil over high heat and allow to boil for 15-20 minutes. While the seeds are boiling, preheat the oven to 400° F and line a baking sheet with parchment paper or a silicone baking mat.
Drain the pumpkin seeds and toss them with the oil and remaining 1 tsp of salt. Stir until they are well coated.
Spread the seeds into an even layer on the prepared baking sheet and transfer to the oven.
Bake for 40-50 minutes, stirring the seeds halfway through. The seeds are done when they are deep golden brown.
Season with additional salt or seasoning of choice if desired.
Allow to cool slightly and then enjoy immediately or transfer to a storage container to enjoy later.