Sunday's Leftover Chicken Rice Casserole

I always make too much chicken, so it's always good to have a few recipes on hand for the leftovers. This recipe was for uncooked chicken so I changed it a little. The ingredients are:

Leftover chicken, cut into cubes
1/8 cup olive oil
1 celery/onion packaged mix
2 carrots
1 teaspoon minced garlic
1 package of boil in bag rice, precooked
2 cups chicken broth
salt and pepper to taste
1/2 cup shredded or grated Parmesan cheese
dash of chopped or dried parsley

Directions:

Add oil and cubed chicken to a pot on med/high heat. Season with salt and pepper and cook about 3 minutes then add the onion/celery mix, garlic and carrots.  Add the chicken broth and precooked rice, let simmer for 15-20 minutes; stirring occasionally. Add the Parmesan cheese and parsley right before serving.

PS: When I buy celery and onions I tend to waste a lot of it, so I've been buying packaged onion/celery mix and freezing it until I need it. I freeze it if I'm going to be using it in a cooked recipe, otherwise, I'll refrigerate it for salads.