Mix everything together. In a medium saucepan, combine the pumpkin puree, brown sugar, maple syrup, pumpkin pie spice, and water or apple cider.
Simmer gently. Bring the mixture to a gentle boil over medium heat. Reduce to low and simmer uncovered for about 20 minutes, stirring occasionally. The pumpkin butter will thicken and develop a deep, rich color.
Cool and store. Let the pumpkin butter cool completely before transferring it to a clean jar. Keep refrigerated for up to two weeks or you may can or freeze this recipe for longer storage.