Place chicken in slow cooker. Mix together all other ingredients except peanuts and cilantro and pour over chicken.
Cook on low for 8 hours or on high for 3-4 hours depending on your slow cooker, stirring occasionally. Serve over white rice and garnish with peanuts and cilantro.
Preparation option: Peanut sauce is delicious on vegetables, so you could add slices of colorful bell peppers and onions to the slow cooker at the beginning of cooking. Throw in 2-3 cups of spinach in the last half hour or so and this is a complete meal with no sides needed.
To freeze: Prepare the sauce in whatever quantity needed for the number of dishes you want to freeze. Freeze the sauce in a separate container and put it together with the chicken in the freezer, then place the instructions and ¼ cup chopped peanuts with them. Label with: Easy Slow Cooker Thai Chicken in Peanut Sauce: Thaw. Place chicken in slow cooker. Cover with sauce and cook on low for 8 hours or high for 3-4 hours depending on your slow cooker. Stir occasionally. Serve over white rice and garnish with 2 Tbsp. chopped fresh cilantro and ¼ cup chopped peanuts.