When I made pumpkin puree at home, I make sure to save the seeds. I usually roast the pumpkin seeds in butter, but I wanted to try a healthier recipe. I found this roasted pumpkin seeds recipe from Simply Recipes. The recipe uses olive oil instead of butter. Also unusual, you are supposed to boil the pumpkin seeds in salted water before roasting. I gave the recipe a whirl, and it was pretty good. I still like the butter version better though :) It's definitely a fun recipe to try.