Heat your crockpot to high to get it warmed up. Leave lid on.
Wash and prepare your apples.
Soak apples in lemon juice water to prevent browning *optional.
Drain apples, and add to crockpot.
Sprinkle cinnamon on top and stir to combine.
Place lid on crockpot and cook.
You can cook on high for 3-4 hours, on medium for 5-6 hours or on low for 7-8 hours.
Mash to desired consistency and serve.