Cheesy Cauliflower Casserole

4.8 from 5 votes
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This delicious cheesy Cauliflower Hash Browns Casserole will have everyone ready to dig in. With a golden brown top, crispy edges, and plenty of cheddar cheese, this is a family-favorite side dish for breakfast, brunch, or dinner. Made with only a handful of ingredients, it is naturally gluten free and one simple swap makes it low carb and keto-friendly, as well!

A piece of Cauliflower Hash Brown Casserole being picked up on a spatula from the baking pan.

Cauliflower Hash Browns – Easy Breakfast Casserole!

I personally don’t have anything against potatoes. I’ll often make air fryer French fries or enjoy Broccoli Cheddar Twice-Baked Potatoes with a steak. And I’m not against digging into a pile of Bacon Cheddar Mashed Potatoes.

But the magical ability of cauliflower to transform into pizza crust, cauliflower mashed potatoes, and more makes it a great way to not only cut down on extra carbs, but also to get the kids to eat more veggies.

While I do love basic roasted cauliflower, it’s way more fun to eat Cauliflower Tots! Except on busy days, I don’t always have the time for all that scooping and pressing into mini muffin tins and such.

So one day I just dumped it onto a pan and baked it. It has all the taste and crispness of those tots but with much less time, work, and cleanup! And it is perfect to whip up for company or as a potluck dish.

Squares of Cheesy Cauliflower Hash Browns Casserole on a plate with sausage, eggs, and fruit.

Recipe Ingredients

Here is a quick overview of what you’ll need. See the recipe card for the full amounts and detailed instructions.

  • Cauliflower. About one medium-sized head will yield about six cups of shredded cauliflower. You’ll need to remove the core, but you can use the stems.
  • Cheddar cheese. Use your favorite. I prefer a sharp yellow cheddar for the tangy flavor and golden color.
  • Eggs.
  • Cornmeal or almond flour. Cornmeal binds the hash browns and gives it a nice texture, but you can use almond flour for a low carb option. For a firmer texture, using half the amount of almond flour and a bit of coconut flour to absorb the excess moisture works perfectly.
  • Dry ground mustard. It helps enhance that cheesy flavor by giving it a little extra sharp bite.
  • Salt and pepper.

How to Make Cauliflower Hash Browns Casserole

This is such a simple side dish to make. Preheat your oven to 350°F and coat your baking dish with nonstick cooking spray. Now let’s get started.

Prep the cauliflower. Remove the core of the cauliflower and cut it into large pieces. Then shred the cauliflower using a box grater or a shredding blade on a food processor. Place the shreds into a kitchen towel and twist and squeeze to remove as much moisture as possible.

Mix everything together. Combine the cauliflower, cheese, eggs, cornstarch or almond flour, dry mustard, and salt and pepper in a large bowl. Toss it together with a fork until well combined.

Press and bake. Transfer the mixture to the prepared pan and press down very firmly so it all sticks together. Bake at 350°F for 40-45 minutes, until golden and crispy. Cut into squares and serve right away.

Serving Cauliflower Hash Browns Breakfast Bake from a rectangular pan with a spatula.

Tips for Success

Coat the pan well. I don’t always use nonstick cooking spray when cooking or baking, but this is one case where it is important to be able to remove the pieces from the pan without it sticking or falling apart.

Do not cook the cauliflower first. Yes, you are reading the recipe correctly – you do NOT cook the cauliflower before shredding it. 

Squeeze it well. The important thing is to squeeze out as much excess moisture as possible. I do this by wrapping the shredded cauliflower in an old kitchen towel and squeezing and twisting until it starts releasing liquid. Then squeeze more. And then a little more. You can do this in batches if that makes it easier.

Make it ahead. This recipe can be made up to two days in advance and reheated before serving. Keep reading for details on how to store and reheat it.

Baked Cauliflower Hash Browns Casserole served for breakfast with eggs, sausage, and fruit on a blue plate.

Storing and Reheating Leftovers

You can wrap the entire pan tightly with plastic wrap, or place smaller pieces into airtight storage containers. The keep it refrigerated for up to two days.

You can throw the entire pan back in the oven at 350°F for 10-15 minutes, or cut individual squares and place them on a baking sheet. This will get you the browned edges on all sides. The squares can also be crisped up in an air fryer at 400°F for 8-10 minutes, or until hot and brown and crispy on the edges. Individual servings can also be microwaved, but it may get a little soggy.

I do not recommend freezing leftovers, as the cauliflower and dairy ingredients will release moisture upoong freeizng and tahwing. This will give it an undesirable texture.

A plage of sausage and eggs with squares of cauliflower hash browns on a blue plate with the baking pan of the rest of the casserole behind it.

Serving Suggestions

Cauliflower hash browns casserole is great to serve for breakfast or brunch with any meal where you’d serve breakfast potatoes. You can enjoy it simple with bacon or sausage and eggs prepared your favorite way Or try it alongside these dishes:

We also love to enjoy it with our favorite easy dinner recipes, like:

And don’t forget your homemade ketchup!

A piece of Cheesy Cauliflower hash Browns Casserole on a spatula in a baking dish.

Things You’ll Need

  • Food processor with shredding disc – I find using the shred attachment for a food processor is the fastest and easiest way to shred the cauliflower. It also makes quick work of that large block of cheese, though you can use a regular box grater for both if you choose.
  • Large bowl – it’s easiest to mix everything together if you have a nice, big bowl from a set of mixing bowls.
  • 9×13 inch baking pan – I used to always bake this in a glass baking dish. However, I have recently tested it several times in a metal baking pan and it works perfectly too. It does brown on the edges a little faster though. But either will work. I still prefer the glass because I can let it bake a little longer to dry out and crisps up a little more.
Serving Cauliflower Hash Browns Breakfast Bake from a rectangular pan with a spatula.
4.8 from 5 votes

Cheesy Cauliflower Hash Browns Casserole

This delicious cheese Cauliflower Hash Browns Casserole will have everyone ready to dig in. With a golden brown top, crispy edges, and plenty of cheddar cheese, this is a family-favorite side dish for breakfast, brunch, or dinner. Made with only a handful of ingredients, it is naturally gluten free and one simple swap makes it low carb and keto-friendly, as well!
Prep: 12 minutes
Cook: 45 minutes
Total: 57 minutes


  • 1 head cauliflower, shredded to yield about 6 cups
  • 8 oz. shredded Cabot cheddar cheese (about 2 cups)
  • 2 large eggs
  • 1/2 cup cornmeal or almond flour (or 1/4 cup almond flour plus 2 Tablespoons coconut flour)
  • 1 teaspoon ground mustard
  • 1 teaspoon kosher salt
  • 1/4 teaspoon black pepper


  • Preheat your oven to 350°F. Spray a 9×13 glass or ceramic casserole dish or metal baking pan with oil or cooking spray.
  • Using a knife, remove the core from the cauliflower. You can keep the stems with the florets. Using a box grater or, preferable, the shredding blade on a food processor, shred the cauliflower.
  • Place the uncooked shredded cauliflower in a kitchen towel or several layers of paper towels and squeeze out the excess moisture.
  • Place the cauliflower in a large bowl and add the cheese, eggs, cornmeal or almond flour, ground mustard, salt, and pepper. Toss with a fork until everything is thoroughly combined.
  • Transfer the mixture to the prepared baking dish and press down firmly until it is even and packed down.
  • Bake at 350°F for 40-45 minutes, or until golden brown. Cut into 24 squares and serve.


Note that Nutrition Facts are based on using cornmeal. If replacing with almond meal, there will be approximately 4 grams of carbs per serving.
Nutrition Facts
Cheesy Cauliflower Hash Browns Casserole
Amount Per Serving (2 squares)
Calories 126 Calories from Fat 72
% Daily Value*
Fat 8g12%
Saturated Fat 4g20%
Cholesterol 51mg17%
Sodium 338mg14%
Potassium 195mg6%
Carbohydrates 8g3%
Fiber 2g8%
Sugar 1g1%
Protein 7g14%
Vitamin A 234IU5%
Vitamin C 23mg28%
Calcium 151mg15%
Iron 1mg6%
* Percent Daily Values are based on a 2000 calorie diet.
Disclaimers: Please discuss your individual dietary needs (i.e. gluten free) with a physician. Even when not specified, be sure to verify all ingredients are gluten free, if needed, by reading labels on all packaging and/or confirming with the manufacturer this varies by brand and can change at any time. Nutrition information shown is an estimate and not guaranteed to be accurate.


More favorite cauliflower side dishes

  1. Lisa

    I bet this would be good adding chicken, peppers and onion as well for a full meal type of dish! Thanks for posting!!!

  2. Leigh Anne Farrell

    I bought a simple human paper towel holder and it has changed our lives! It was spendy ($29?) but ooooooh, so worth it!

  3. Hello cute lady! This looks so amazing. I would love some right now. Pinned and tweeted. We appreciate you taking the time to stop by and party with us. It wouldn’t be a party without you! I hope to see you tonight at 7 pm. Lou Lou Girls

  4. Heather

    LOVE anything cauliflower & MUST try this…any ideas on how to reduce amount of cheese? Lactose intolerance but can handle a little, 2 cups too much per serving 🙁

  5. You crack me up! I would do the exact same thing with the orange paper towel holder. Look over functionality…at least in this case.

    I love that you made this casserole using only cauliflower as the base. I was a tad nervous that the frozen tater tots were going to make it into the dish. Nothing wrong with them but I LOVE the freshness of your recipe.

  6. Your paper towel holder story has me in stitches!! Thankfully we haven’t had anything like that happen (yet), but my guy definitely loves function over looks, and I definitely fall into the “everything should match” category. We’re moving again in the next 6 months, so we’ll see what happens when I try to rearrange everything then! 😉 Pinned!

  7. I have to admit our current paper towel holder drives me a little nuts. When I pull it the paper towels do not turn easily. It takes to hands to get a paper towel. Ugh! This casserole would not drive me nuts. I would love every bite of it.

  8. Love the paper towel holder story! My hubby and I actually disagree over how to take eggs out of the carton, especially the dozen-eggs cartons. I say you take them from each side, on opposite corners and move your way in, because that way you keep the center of gravity in the center. If you take the eggs out his way, working from one side to the other, then once the carton is half empty, it’s too easy for someone to pick up the carton from the mostly empty side while expecting it to be heavier than it is, and potentially crack eggs. I guess if these are the things we argue about, things are pretty good! 🙂

    This casserole looks wonderful! Cauliflower and cheddar are just meant for each other.

  9. Love the paper towel holder wrangling. Myles and I also do not see eye-to-eye on ours. I’m all about having it be out of the way, as inconspicuous as possible, but he refuses to allow the roll of paper towels to be kept in a cabinet. So we’ve had quite a path of negotiation in our 8 !/2 years of marriage + 2 years of living together. And I love this casserole. I want to make it for dinner!!!!

  10. Haha I love this story! I’m pretty sure that when Dave and I finally move in together, he will be trying to ditch a ton of the stuff I have. He is certainly a function person, and I like to be more matchy like you 🙂 This cauliflower casserole is making me seriously want to go buy a hunk of cheese and turn on the oven – how yummy! Thanks for sharing 🙂 Pinning!

  11. I think I could get my husband to eat cauliflower with this one, but he won’t change the paper towel roll either and ours just slips off and on! Figures.

  12. Another tasty cauliflower recipe from the Cauliflower Queen. Yes, I’ve dubbed this as your new nickname and can’t wait to see you again so I can call you it in person 🙂

  13. Gwen @simplyhealthyfamily

    How funny, we’ve been married 12 years now and my sweet husband has thrown in the towel on such matters 😉
    I painted our first little kitchen a pretty burnt orange in a faux paint with gold accents (I love Tuscan colors). You made me miss my first little kitchen 😉
    I honestly have to have this cauliflower casserole! I just know it will be a big hit!

  14. It’s funny what we battle over with our spouses, isn’t it? I lost the bar soap war in our house; I used to collect these cute little soaps – in all different shapes, sizes, and scents. But as I am not the bathroom cleaner, my husband objected to the slimy soap trail and dripped from dish down the sink. I lost…no more cute soaps. Bar soaps have been permanently banned from my house. But, at least, I haven’t had to clean a bathroom in 17 years! I’ve never made cauli-tots. You have me convinced. Thanks for sharing.

  15. Ethel @eatingininstead

    Oh my, this is my kind of recipe, simple and looks delicious. I love new ways to use cauliflower. Thanks for the recipe!

  16. Your paper towel war is to funny! My husband loathes our paper towel holder as well… lol! We just got into using cauliflower as a substitute for rice over here so I’ll be sure to check out your savory casserole recipe! Yum!

  17. 5 stars
    Well I’m totally intrigued and will be making this one! My kiddos love veggies so this is an easy one for my house!

    Oh, and subtle orange IS a thing!! My hubs LOVES and I mean LOVES construction orange. You know the blindingly VIVID and NEON orange? Yeah, that one. So when it came time to pick out the color of KitchenAid Mixer after our wedding, I chose tangerine since we were going for, to use your words, subtle but vivid, warm and cheery colors for our kitchen (not necessarily coordinating but colors that would make us smile when we stepped into the kitchen), so the color is called “tangerine” and its just a mellow orange. He’s come to accept it over the years but still loves his construction orange. Oi.
    oh and 10-15 minutes, I’d just use it to hold a “stunt” roll of papertowels and probably have another roll on the counter. but to be fair, our papertowel holder has this cute carrot center that you put the roll on and a little white rabbit that spins when you pull the roll and totally bought it based on super cute factor and when we got it home, realized the base is SO light that when you go to pull a piece off the roll, its a three handed job, one hand to hold the base so you can pull a sheet off and another hand to tear it since you cant tear it off without taking the entire thing with you. Functionality? 1 out of 10. Cuteness? 10 out of 10! but the hubs and I cringe every time we have to rip a sheet off the super cute bunny paper towel holder. LOL 🙂

  18. LOL about the paper towel holder! I’m glad your orange one found a home in your new house! As far as your casserole, I had a weak spot for Tater Tots as a kid, but I love your healthier casserole version even more!

  19. So funny about the paper towel holder because it is the same thing with our kitchen trash can. I love it and my husband hates it so he avoids taking out the trash (or when he lets out a repeated “ugh” or “sigh”).
    Anyway, your casserole looks wonderful to me because I love cauliflower and luckily so does my husband.

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