Make the chicken meatballs. In a large bowl, mix ground chicken, bread crumbs, egg, minced onions, and chipotle seasoning until well incorporated.
Make the chipotle sauce. Coarsely chop the chipotle peppers and add to a bowl with cream cheese, mayo, cream of chicken, chicken broth, heavy whipping cream, salt, and pepper. Whisk to combine. Add a small amount to the slow cooker, enough to cover the bottom.
Form chicken into 1” balls and place into the slow cooker.
Pour creamy chipotle seasoning into the slow cooker.
Cover, and cook on high for 3.5 hours or low for 5 hours. Once cooking is complete, stir well to blend the sauce as some elements may separate.
Garnish with cilantro and serve immediately. Enjoy!