Using running water seperate seeds from pumpkin guts. Soak them in salt water while you carve. Preheat and bake at 220C for 15-20 mins. Eat them whole.
I had an elementary school teacher who would ask all of us to save the seeds when making jack o lanterns and give it to her. She’d then make a ton of roasted pumpkin seeds and share it with us and some kids from other classes who brought seeds.