Chop up the 10-12 apples and 1-2 oranges, making sure all apple seeds are discarded, and add the fruit to the crockpot.
Add the 1 inch piece Ginger, 3-4 Cinnamon Sticks, spices (1 teaspoon Nutmeg & 1 teaspoon Cloves), and 1½ - 2 cups Brown sugar.
Then add the water, just enough to cover everything. 10-12 cups Water should be enough, but the actual amount will depend on your slow cooker.
Cook on high for 3-4 hours.
Use a potato masher and mash down all of the ingredients in the water.
Once mashed, strain the mixture with a fine strainer, or a cheesecloth, and discard the pulp.
Stir in 1 tablespoon vanilla extract and then it is ready to serve.
Using a ladle, pour your cider into separate glasses, add a cinnamon sticks and a few apple slices and enjoy warm!
Notes
Use a mixture of red and green apples for best results.There is no need to peel or core the apples since the mixture will be strained. Likewise, you can leave the peel on the oranges as the zest brings in more flavor.Make sure that your fruit is fully softened before you switch the slow cooker to warm. This way, when you're mashing the mixture, you get all the sweetness from it.