Step 1: Add the Meatballs and Mix the Sauce - Place the frozen meatballs directly into a 5 or
6 quart slow cooker. There is no need to thaw them first, which is one of the reasons I appreciate this recipe so much on a busy day. In a medium bowl, whisk together the hoisin sauce, soy sauce, honey, sesame oil, rice vinegar, minced garlic, chili garlic sauce, and brown sugar. Keep whisking until the honey and brown sugar are worked into the sauce and everything looks smooth. You should already smell the garlic and sesame coming together, which is a pretty good preview of where dinner is headed.