Slow cooker apple cinnamon oatmeal is a comforting breakfast dish that is easy to prepare and will fill your home with a wonderful aroma. It's made with wholesome oats, fresh apples, warm cinnamon, and a splash of milk for creaminess. Sugar gives the dish a touch of sweetness, and butter and vanilla add an extra special touch. This is a fool-proof way to cook oatmeal. Plus, you’ll only end up with one dish to clean. Simply add the ingredients to the slow cooker and walk away. Serve this…