This easy recipe for Crock Pot French Onion Chicken is so simple to make and features tender chicken cooked in a savory onion-flavored beef broth. Topped with cheese, it's a unique twist on classic French onion soup that's sure to be a hit at your next meal!
– 4 boneless, skinless chicken breasts – 1 yellow onion (thinly sliced) – 1 (1 oz) onion soup mix – 1½ cups beef broth – ½ tsp black pepper – ½ tsp thyme – 2 tbsp balsamic vinegar – 8 slice Swiss cheese