-
Wash, peel, core, and coarsely chop the apples.
-
Place apples in a large pot with the apple juice.
-
Bring the mixture to a boil on the stovetop; reduce heat and simmer until the apples are soft, about 30 minutes.
-
Strain the soft apples and juice through a food mill or press through a fine mesh sieve right into a large crock pot.
-
For a finer consistency, strain the pulp twice.
-
Stir in the sugar, cinnamon, and nutmeg until well blended.
-
Cover and cook on low heat for 12-14 hours until thickened.
-
The butter is done when it mounds up on a spoon and has a glossy sheen.
-
The butter is also done when a spoonful placed on a chilled plate does not release any liquid.
-
Ladle butter into clean, hot half-pint or pint jars.
-
Wipe rims with a damp cloth.
-
Place dome lids on the jars and screw on the bands.
-
Process jars in a 200F water bath 10 minutes for half-pints, 15 minutes for pints.