Peel and dice the apples into small pieces.
Add the lemon juice, apple cider, and sugar to a stove-top pot.
Heat on medium-high, stirring occasionally for about 3 minutes until the sugar dissolves.
Add apples and mix.
Add vanilla extract, cinnamon, nutmeg, and stir.
Bring the apple mixture to a boil.
Reduce it to a simmer, and cook for 15-20 minutes, stirring every 5 minutes.
Remove it from the heat.
Using an immersion blender, blend the mixture until it is completely smooth.
Return it to the heat and cook on low for 20 minutes.
It will continue to thicken and get darker in color.
Allow the apple butter to cool completely.
Store the apple butter in airtight jars in the refrigerator.