Start by rinsing the chicken very well both inside and out. If there is a giblet packet inside, remove it and discard. Allow all water to drain out and pat the outside dry with paper towels.
Cut apple and onion into quarters and stuff inside the chicken cavity and carefully place chicken breast side down in the crock pot.
Drizzle olive oil atop the chicken and rub it lightly to evenly coat the skin. Sprinkle with salt, pepper and garlic and add any fresh herbs you have on hand. I use rosemary, sage and parsley.
Cover and set the slow cooker to low heat. Cook on low for 6-8 hours.
Recipe by My Earth Garden at http://www.myearthgarden.com/2012/07/slow-cooker-chicken/