After removing the seeds from the pumpkins, remove all the pieces of pumpkin remaining on them. Rinse under cold water in a colander until clean. Spread the seeds out in a cookie sheet covered in paper towels and allow them to dry 24 hours.
Heat 2 tablespoons butter in a skillet on medium heat for 2 cups seeds. One butter is bubbling, add the seeds. Season with salt and pepper. Toss and stir constantly until brown. Place the seeds back onto the cookie sheet except without paper towels. Bake at 400 degrees for 10-15 minutes.