Step 1

Preheat oven to 350 degrees.

Step 2

Prepare 2 cups of rice - suggest you use quick-cook rice but not a microwavable bag because those have added salt

Step 3

Melt butter in a large skillet and then add onion and chicken breast. Cook until the exterior is browned. It is going in the oven so you do not have to cook the chicken all the way through but you do want a good sear.

Step 4

Mix all remaining ingredients, including one cup of swiss cheese, in a large bowl then transfer into an 8x8 casserole dish sprayed with cooking spray. Add chicken and onions.

Step 5

Bake in a 350-degree oven for about an hour. With about fifteen minutes remaining, sprinkle the remaining cup of swiss cheese over the top of the dish and return to the oven for remaining cook time. When one hour has passed, double-check that chicken has reached an internal temperature of 165 degrees.