How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Cauliflower-Broccoli Rice Casserole?

You need 11 ingredients. The key ingredients include: 2 1/2 c. cooked rice (brown rice preferred), 3 c. cooked broccoli and cauliflower, 1/2 c. diced onions, 1/2 c. diced celery, and more.

Is Cauliflower-Broccoli Rice Casserole suitable as vegetarian?

Yes, Cauliflower-Broccoli Rice Casserole falls under the Vegetarian category and is a great choice for this type of meal.

How do I store leftover Cauliflower-Broccoli Rice Casserole?

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

Cauliflower-Broccoli Rice Casserole Recipe

Name: Cauliflower-Broccoli Rice Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 2 1/2 c. cooked rice (brown rice preferred); 3 c. cooked broccoli and cauliflower; 1/2 c. diced onions; 1/2 c. diced celery; 1 c. fresh mushrooms, diced; 1 can cream of mushroom soup; 1/2 to 1 c. Monterey Jack cheese; 1/2 to 1 c. sharp Cheddar cheese; Parmesan cheese; slivered almonds; small amount milk

Try this homemade Cauliflower-Broccoli Rice Casserole recipe the whole family will love. Made with rice, broccoli, onions and celery. Easy step-by-step …

This Cauliflower-Broccoli Rice Casserole relies on simple, everyday ingredients such as diced onions, diced celery, fresh mushrooms, diced and cream of mushroom soup. It comes together quickly and makes 4 servings, at about 738 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.

Updated Jun 30, 2026

Serves 4 Vegetarian

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Leave out the nuts to make it nut-free, or swap in seeds for a similar crunch.
Coconut cream is a reliable plant-based alternative to dairy cream.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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Cauliflower-Broccoli Rice Casserole

Tips for the best results

Variations & substitutions

My Personal Notes

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