This is what worked for me:
Peel, core, and cut apples. Place in crockpot.
Add a bit of water, but not too much (no more than 1 or 2 cups for a full crock of apples. You don't want to end up with apple cider instead. You can always add more water later).
Add any combination of the following: white sugar, brown sugar, cinnamon, nutmeg, ginger, lemon juice (I added a bit of everything).
Simmer in crockpot on low for 8 hours.
After the apples are cooked and soft, use a potato masher to create a chunky sauce. If you want it smooth, run everything quickly through a blender after the apples have cooled. If you want your sauce thinner, add a little water. You can also create a smooth and chunky combination by employing both methods and mixing the two sauces.
To die for, I tell you. To die for!