Preheat your oven to 350 degrees. Make can of Cheddar cheese soup mix according to package directions (one can of soup mix to one can of milk). Place chicken breasts in a 9 by 13-inch baking dish. Season the chicken with seasoned salt. Pour 3/4 of the prepared soup over the chicken breasts.
Add broccoli to chicken that has been covered with the cheddar soup. Melt butter and combine with Ritz crackers, sprinkle buttered crackers over the broccoli. Add remaining soup mix, and bake for approximately 45 minutes or until the chicken is done. (Check chicken by cutting the thickest part and look to see that the chicken is uniform in color). When the chicken has been removed from oven sprinkle with shredded cheddar cheese.