Easy Chicken Enchiladas Recipe. Let the slow cooker do the hard part for you! 6-8 boneless, skinless chicken thighs (or breasts, if preferred) 1 (10-ounce) can enchilada sauce + 1 (14-ounce) can enchilada sauce 1 (8-ounce) can green chilis ½ medium onion, diced 8 (10-inch) flour tortillas 12 ounces Monterrey Jack cheese, grated 2 green onions, chopped