Creamy Chicken and Rice Casserole

I made this a couple nights ago and was pleasantly surprised at how easy and delicious this was! I love the french's fried onions too, so maybe I loved it more than the average person :) super tasty dinner though!!

I found this recipe at Tasty Kitchen

1 (6 oz) box chicken flavored Rice-A-Roni
1 can cream of mushroom soup
8 oz sour cream
about 4-5 chicken breasts, cooked and diced
1 6 oz container French-Fried onions

Prepare Rice-A-Roni according to package directions. Add sour cream and soup and mix well. Then mix in cooked, diced chicken. Pour into a 9x13 pan. Bake for 40 min at 350. Remove from oven and top with the French-Fried onions. Return to oven and cook 5 min more.