Wash and pit the plums. Cut them into small pieces.
In a large saucepan, combine the plums, sugar, lemon juice, cinnamon, and nutmeg. Cook over medium-high heat, stirring often, until the mixture comes to a boil.
Reduce the heat to low and simmer, stirring occasionally, for 30 minutes, or until the mixture is thick and jam-like.
Remove the pan from the heat and allow the mixture to cool slightly before transferring it to a food processor or blender. Process or blend until the mixture is smooth and creamy.
Transfer the plum butter to an airtight container and refrigerate until ready to use.
Interesting Facts
Plum butter has been eaten in Europe since the Middle Ages.
Plum butter is a great way to use ripe or overripe plums.
Plum butter is a great addition to your morning toast or pancakes.