Place the chicken breasts in the bottom of the crockpot.

In a mixing bowl, combine the ranch dressing mix, cream of chicken soup, cream cheese, and chicken broth until smooth.

Pour the mixture over the chicken in the crockpot.

If using, add sliced mushrooms and broccoli florets on top.

Cover and cook on low for 4-6 hours or until the chicken is cooked through and tender.

Once cooked, shred the chicken in the crockpot using two forks and stir to combine with the sauce.

Sprinkle shredded cheddar cheese on top and let it melt before serving.