Ingredients

3 small onions, very thinly sliced (about 3 cups)

3/4 c. beef broth

2 1/2 lb. large chicken breasts (about 6)

1 (1 oz.) instant onion soup mix packet

1 tbsp. fresh thyme leaves

Kosher salt

3 c. shredded Swiss cheese (about 8 oz.)

2 tbsp. fresh parsley leaves, chopped

Preparation

Step 1Arrange onions in an even layer in the bottom of the slow-cooker. Pour beef broth over onions.Step 2Season chicken breasts all over with onion soup mix packet. Add in a single layer to the slow cooker. Sprinkle with the thyme leaves.Step 3Set slow cooker to low and cook for 1 ½ to 2 hours.Step 4When chicken is cooked, preheat oven to broil on high with a rack in the upper third. Transfer chicken, onions, and broth to a baking dish and sprinkle chicken with Swiss. Broil until cheese is bubbly and golden, about 6 minutes. Alternatively, top chicken with cheese in the slow cooker and increase the heat to high. Cover and continue to cook until the Swiss is melted.Step 5Sprinkle with parsley and serve.