Can I use rotisserie chicken?
Yes, and it is a great move. Use about 3 cups shredded rotisserie chicken. Skip the raw chicken step and stir it in with everything else before baking.
Do I have to use broccoli?
Nope. Try frozen peas, sautéed mushrooms, spinach (stir it in at the end so it does not go swampy), or mixed vegetables. Keep the amount around 2 cups.
Spinach tip: Stir in 2 big handfuls of baby spinach right after the casserole comes out of the oven, then put the foil back on for 2 to 3 minutes to wilt it. Proceed with the 10-minute rest.
Why is my rice still hard?
Usually one of three things: your dish was not tightly covered, your oven runs cool, or you used a different rice. Make sure you use long-grain white rice and keep it covered for the first bake.
Also: some extra-long grains (like certain basmati brands) and very wide, shallow dishes can run a little thirsty. Check at the 40-minute mark. If the rice is still firm and the pan looks dry, add 1/4 cup broth, re-cover, and bake 10 to 15 minutes more.
Can I use brown rice?
Yes, but not as a straight swap. Brown rice takes longer and needs more liquid. The simplest, least dramatic option is to use cooked brown rice.
Tested shortcut: Use 3 cups cooked brown rice (cooled is fine). Reduce the broth to 1 cup. Stir the cooked rice in with the sauce, add broccoli and cooked chicken (rotisserie works great), then bake at 375 F for 25 minutes covered, plus 12 to 15 minutes uncovered with the topping until bubbly.
What can I use instead of cream of chicken soup?
You can swap in cream of mushroom or cream of celery. If you want to avoid canned soup entirely, replace it with 1 cup of thick béchamel or a quick “cheater” sauce: warm 1 1/2 cups milk with 2 tablespoons butter and 2 tablespoons flour until thick, then season well.