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    Home » Recipes » Casseroles

    Broccoli and Cauliflower Rice Casserole

    Published: Jan 10, 2017 · Modified: May 11, 2024 by Lauren Kelly · This post may contain affiliate links.

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    Packed with wonderful flavors and tons of vitamins and minerals, this warm, comforting low carb Broccoli and Cauliflower Rice Casserole is a simple to make, weeknight meal. Go ahead and add some shredded chicken or shrimp if you want to add some protein.

    Broccoli cauliflower rice casserole on a dish.Pin

    So, how many of you that made resolutions are still following through with them?It's only January 11, but many people have already stopped by now!

    Personally I don't believe in making resolutions because many people feel overwhelmed and give up, which in turn makes them feeling bad once again.  I like making both short and long term goals each year instead.  I make them realistic and attainable.

    For example, instead of saying "I want to lose 30 lbs" I say "I want to eat more vegetables each day".  My goals are more specific  and realistic.

    This broccoli cauliflower rice casserole is one of those easy one dish meals that you can keep reheating and eat it for a few days! That is HUGE for a busy mom like me.

    If you are looking for some other low carb meal recipes, you will love this delicious Zucchini Ravioli, Eggplant Parmesan, Alfredo Spaghetti Squash and this Tortilla Taco Pie!

    Broccoli cauliflower casserole in a dish.Pin

    Why You Should Make This Broccoli Cauliflower Rice Casserole

    This velvety smooth casserole is made without those processed creamy soups that are loaded with preservatives and sodium. Trust me guys, you will not miss it one bit.  

    Why do so many casseroles containers that cream of mushroom or chicken soup? It drives me crazy and seems so unnecessary.

    This is way healthier and made with all whole ingredients. So for all of you that made goals or resolutions to eat more whole foods, this one is for you!

    This recipe isn't fancy and it doesn't use any crazy, weird ingredients.  If you don't have almond flour and you don't need it to be gluten-free, you can simply use any flour you'd like.

    Recipe Tips

    Sometimes I make this broccoli cauliflower rice casserole on Sunday (my meal prep day) and keep it in the refrigerator for lunch for me for the week. It saves so much time and helps me prevent mindless eating when I am so hungry and have no idea what to eat.

    Some days I add some rotisserie chicken for added protein, other days I eat this with eggs (it might sound strange but please try it!) The possibilities are endless and this casserole is so extremely versatile.

    You an easily omit the beans in this recipe if you are looking to cut down on the carbs.

    The gluten free breadcrumbs are completely optional and personally I leave them out because I don't want the extra carbs, but they do add a nice crunch.

    You can also buy already pre-made riced broccoli and cauliflower these days which is so convenient and saves so much time. I get mine at Trader Joe's but I know most grocery stores carry them these days and I highly recommend, especially if you don't have a food processor.

    Broccoli cauliflower rice casserole in a white baking dish.Pin
    Broccoli cauliflower rice casserole pictures horizontally in a white baking dish.Pin

    Related Recipes

    Greek Artichoke Cauliflower Rice Casserole from Lauren Kelly Nutrition

    10 Minute Healthy Cauliflower Rice from Damn Delicious

    How To Make Cauliflower Rice from The Minimalist Baker

    Mediterranean Cauliflower Rice from Cookie and Kate

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    Riced Broccoli and Cauliflower Casserole

    This Broccoli and Rice Casserole from Lauren Kelly Nutrition is packed with vitamins and minerals and is vegan, gluten free and dairy free!
    5 from 15 votes
    Print Pin Rate
    Course: dinner, Main Course, main dish, Side Dish, vegetarian
    Cuisine: American
    Diet: Diabetic, Gluten Free, Vegan
    Prep Time: 20 minutes minutes
    Cook Time: 15 minutes minutes
    Total Time: 35 minutes minutes
    Servings: 8 servings
    Calories: 156kcal
    Author: Lauren Kelly

    Ingredients

    • 1 large head broccoli
    • 1 large head cauliflower
    • 2 tablespoons olive oil
    • 16 ounces mushrooms washed and sliced
    • 1 onion chopped
    • 2 cloves garlic minced
    • 2 tablespoons ground flax
    • 2 tablespoons almond flour
    • 1 cup almond milk or milk of choice
    • 2 cups small white beans optional, omit or reduce the amount for low carb
    • ½ cup shredded cheddar optional, omit for vegan and dairy free
    • ¼ cup gluten-free bread crumbs optional

    Instructions

    • Preheat oven to 350degrees.
    • Cut the heads off of the broccoli and cauliflower leaving the stems behind.
    • Break apart the florets into your hands.
    • Transfer the broccoli and cauliflower to a food processor.
    • Using the grater attachment on the food processor, pulse until they are the size of rice.
    • Transfer to a paper towel to remove and moisture .
    • Set aside.
    • Over medium heat, add oil, onion garlic and mushrooms to a sauce pan.
    • Cook for 5 minutes until softened.
    • Add flax and almond flour and mix again.
    • Add milk, stir again and bring to a boil.
    • Reduce heat and stir allowing to cook for another 5 minutes.
    • Add beans, broccoli and cauliflower. Mix again.
    • Add cheese (if using) and pour mixture into a casserole dish.
    • Bake in preheated oven for 40 minutes in preheated oven until edges are brown and casserole is bubbly.
    • Top with bread crumbs if using and cook for another 5 minutes.

    Notes

    To store in the refrigerator: Place in an airtight container in the refrigerator for up to 5 days.
    You can add some cooked chicken or turkey to this to add some protein.

    Nutrition

    Calories: 156kcal | Carbohydrates: 14g | Protein: 8g | Fat: 9g | Saturated Fat: 2g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Cholesterol: 7mg | Sodium: 135mg | Potassium: 680mg | Fiber: 6g | Sugar: 5g | Vitamin A: 545IU | Vitamin C: 105mg | Calcium: 154mg | Iron: 1mg
    Tried this Recipe? Pin it for Later!Mention @lkellynutrition or tag #lkellynutrition!

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    Reader Interactions

    Comments

    1. Jennifer

      April 27, 2021 at 12:46 pm

      5 stars
      My husband and I love this!! So easy and so good! Making again this week!

      Reply
    2. Toni

      April 27, 2021 at 10:20 am

      5 stars
      This is such a delicious and easy to make gluten free recipe!! Thanks for sharing!

      Reply
    3. Beth

      April 27, 2021 at 9:48 am

      5 stars
      Wow! This casserole is so delicious and packed with so much flavor! My family and I love this recipe! This was a big hit here and very easy to make for dinner!

      Reply
    4. Kristyn

      March 15, 2021 at 6:33 pm

      5 stars
      So hearty & tasty!! Broccoli & rice are my favorite together. Cauliflower rice has been my go-to lately, for a healthier option.

      Reply
      • lauren.kelly

        March 15, 2021 at 6:35 pm

        Glad you like it too!

        Reply
    5. Beth

      March 15, 2021 at 5:29 pm

      5 stars
      Yum! This looks amazing and so tasty! I can't wait to give this a try!

      Reply
      • lauren.kelly

        March 15, 2021 at 6:36 pm

        Enjoy!

        Reply
    6. Natalie

      March 15, 2021 at 5:22 pm

      5 stars
      What a healthy, filling, & delicious casserole! Love all the vitamins packed in it & the idea that it's low-carb, makes it even more appealing!

      Reply
      • lauren.kelly

        March 15, 2021 at 6:36 pm

        I have to agree, Natalie!

        Reply
    7. Katie

      November 03, 2017 at 11:23 am

      Do you think this could be made using a bag of frozen riced cauliflower? Would you heat the cauliflower first or add it frozen to the casserole?

      Reply
      • lauren.kelly

        November 03, 2017 at 12:18 pm

        Hi Katie! Yes I am sure you can use frozen rice cauliflower. Just defrost it and follow the instructions. I hope you love it!

        Reply
    8. Annika

      February 11, 2017 at 6:54 pm

      Apologies if I have overlooked this information, but what should the oven be set to for baking the dish?

      Reply
      • lauren.kelly

        February 12, 2017 at 1:32 am

        Hello Annika! I am so sorry, I just updated it to say 350 degrees! Thank you! I hope you like it!

        Reply
    9. Kimberly @ The Daring Gourmet

      January 13, 2017 at 3:59 am

      What a great casserole, I love the ingredients in this!

      Reply
    10. Erin @ Texanerin Baking

      January 12, 2017 at 8:22 pm

      Your goals sound like good ones! And this casserole looks awesome, too. 🙂

      Reply
    11. Angie | Big Bear's Wife

      January 12, 2017 at 3:39 pm

      Oh my gosh! Yes, I don’t believe in making resolutions either!! If I do make them I always break them too early! I just try to eat good all year. This casserole looks amazing and I can't wait to make it!

      Reply
      • lauren.kelly

        January 12, 2017 at 4:27 pm

        Thanks Angie!

        Reply
    12. Suzy | The Mediterranean Dish

      January 11, 2017 at 7:12 pm

      Lauren, you know I love everything you make. But this may be a new favorite!

      Reply
      • lauren.kelly

        January 12, 2017 at 4:27 pm

        Thank you Suzy!

        Reply
    13. Taylor Kiser

      January 11, 2017 at 6:51 pm

      This is such a warm and comforting dinner idea! Love how easy this is and still full of flavor too. Just what you want from a comfort food dish!

      Reply
      • lauren.kelly

        January 12, 2017 at 4:27 pm

        Thanks Taylor!

        Reply
    14. Faith (An Edible Mosaic)

      January 11, 2017 at 12:27 pm

      This looks so tasty and I love that it's full of real-food ingredients! It would be the perfect side dish for just about anything!

      Reply
    15. Amanda|The Kitcheneer

      January 11, 2017 at 12:15 pm

      I saw this on Instagram and I got excited! This looks SO good! And I agree about realistic resolutions. Saying your going to lose a certain amount in a month is setting yourself up for failure! I'm trying to workout 3-4 days a week and have greens with every meal!

      Reply
      • lauren.kelly

        January 11, 2017 at 12:17 pm

        Hi Amanda! Those are perfect resolutions! I hope you like it!

        Reply
    Newer Comments »
    5 from 15 votes (1 rating without comment)

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