There are tons of chicken broccoli casseroles & most of them wouldn't be difficult to add pimientoes & hard-cooked eggs. Did it have rice? Cheese? If so, what kind?

It did have white rice but did not taste like it was made with a "cream of" soup. It was very flavorful and no cheese I saw.

Make a basic medium white sauce, twice the recipoe attached but add about 1 teaspoon of grated onion to the butter as it melts and add i tsp of chicken flavor granules or soup base to the sauce, and 1 tsp of worchestershire sauce.
Cook a cup of rice,
Wash, cut up and peel the stems of a bunch of broccoli, steam the broccoli until just crisp tender.
Cut up 2 hard boiled eggs and mix it with the white sauce and p[our over the top of the casserole.
Top with chushed potato chips and bake at 350 for about 20 minutes until heated through and bubbley at the edges. Don't over cook or dry it out.
Linda C
Put the broccoli on the rice, add a small jar of slivered pimentoes
Place the rice in the bottom of a 2 qt baking dish

Here is a link that might be useful: white sauce