This keto friendly baked corned beef and cabbage casserole recipe combines all the delicious flavors of St. Patrick’s Day into one super easy dish. It’s the perfect way to use up your leftovers!
Get Recipes Delivered Weekly
Join my email list and you’ll receive a free meal plan with 20 keto recipes. Plus, you can opt-in for special offers only for subscribers!
This keto corned beef and cabbage casserole combines all the delicious flavors of St. Patrick’s Day into one super easy dish. It’s the perfect way to use up your leftovers!
Do you like to have corned beef and cabbage on St. Patrick’s Day?
I enjoy keeping with the tradition of holidays, so I usually make this festive meal. But since corned beef and cabbage are easiest to cook in large quantities, I always end up with tons of leftovers.
One year, I got the idea to use up my leftovers in a casserole. And what do you know… turns out, baked corned beef and cabbage is DELICIOUS!
Honestly, I might start skipping the plain beef and cabbage meal and just go straight to this recipe.
Creating the easy baked dish
I wanted to incorporate a faux colcannon into the corned beef casserole to make it nice and hearty. Colcannon is a traditional irish dish of mashed potatoes and cabbage that is also popular on St. Patrick’s Day.
To replace the traditional starchy potatoes, I simply swapped them for cauliflower.
You’ll blend the cauliflower with a little butter, milk, and seasoning, then add it to a prepared casserole dish. Fold in the cabbage and corned beef, bake, and serve!
What could be better than an easy casserole that’s hearty, delicious, and helps you use up your yummy leftovers?
This corned beef casserole recipe will definitely be a staple for us each March. It’s so good, I’m tempted to make it year round.
How to make keto corned beef and cabbage casserole
Ready to see how easy it is to make this tasty and filling casserole?
Making the faux mashed potatoes
- If you’re starting with a fresh head of cauliflower, cut into florets. If you have frozen cauliflower, they’re likely already cut for you.
- Steam or boil the cauliflower until softened.
- Place the cooked cauliflower in your food processor. Add the butter and pulse until mashed.
- Add in your low carb milk, garlic powder, onion powder, salt, and pepper, then puree until smooth.
Completing the dish
- Transfer the cauliflower mash to a 9×13-inch baking pan.
- Fold in the corned beef and cabbage.
- Cover with foil and bake at 325°F for about 20 minutes or until heated throughout.
That’s it! You can top with sliced green onion, cheese (irish cheddar, anyone?), or crushed pork rinds before serving.
You could even drizzle on some thousand island dressing for a yummy reuben-inspired flavor!
Tips for making your casserole
For this recipe, I like to use about a half head of cooked cabbage and one pound of cooked corned beef.
However, these are just approximate amounts. You can use more or less depending on what you have on hand or leftover.
I do recommend sprinkling something on top before serving. Thanks to the cabbage and cauliflower, the color can look a bit bland. The flavors are certainly NOT bland, but I know we eat with our eyes first.
That’s why I like to top mine with sliced green onions. They give it a nice pop of green.
For any leftover corned beef casserole, simply store it in an airtight container in the refrigerator. It will stay fresh for several days and is great reheated!
Keto and low carb corned beef casserole
If you find yourself in the mood for a tasty and hearty casserole, you don’t have to wait until March 17th! This dish is delicious all year round.
And at 3.2 net carbs per serving, it’s perfect for when you need an easy low carb meal.
Other keto casserole recipes
Casseroles are a great way to feed the whole family or meal-prep for yourself for the week. Check out a few of these simple casserole recipes:
- Keto Cheeseburger Casserole with Bacon is an easy ground beef dish that’s perfect for sharing with family and friends on a busy weeknight.
- Stuffed Pepper Casserole has the flavorful ingredients of the classic comfort food combined in a baking dish.
- Low Carb Keto Eggplant Parmesan Casserole with gluten-free breading is a delicious, cozy dish that’s loaded with cheese and authentic Italian flavor!
- Loaded Cauliflower Casserole is a cinch to make anytime you need a simple and tasty side dish for your main course.
- Low Carb Keto Tuna Casserole with spinach is a delicious dinner you can make with ingredients you probably have on hand.
- AIP Bacon Chicken Ranch Casserole is a delicious dish for anyone on a diary-free or autoimmune protocol eating plan.
★ Follow Me on FACEBOOK, PINTEREST and INSTAGRAM for more keto friendly recipe ideas.
★ Sign up for my NEWSLETTER to get the latest updates and a FREE Meal Plan.
Keto Corned Beef and Cabbage Casserole
As an Amazon Associate I earn from qualifying purchases.
Ingredients
- 1 head cauliflower
- 1/2 cup butter
- 1 cup low carb milk I used coconut milk in carton
- 1/2 teaspoon garlic powder
- 1/2 teaspoon onion powder
- 1/2 teaspoon sea salt
- 1/4 teaspoon ground pepper
- 1/2 head cabbage cooked and chopped
- 1 pound leftover corned beef cut into pieces and warmed
- 4 green onions
Low Carb Sweeteners | Keto Sweetener Conversion Chart
Instructions
- Cut cauliflower into florets and steam or boil until softened.
- Place cauliflower into food processor with butter and pulse until mashed.
- Add milk, garlic powder, onion powder, salt, and pepper to cauliflower and puree until smooth.
- Transfer to 9×13-inch baking pan. Fold in corned beef and cabbage.
- Cover with foil and bake at 325°F about 20 minutes or until heated throughout.
- Sprinkle with sliced green onion tops to serve.
Notes
Need Support?
Join my Facebook Group for help with recipes and weight loss support!
Nutrition
Additional Info
Note on Nutritional Information
Nutritional information for the recipe is provided as a courtesy and is approximate only. We cannot guarantee the accuracy of the nutritional information given for any recipe on this site. Erythritol carbs are not included in carb counts as it has been shown not to impact blood sugar. Net carbs are the total carbs minus fiber.
Unauthorized use of this material without written permission from Lisa MarcAurele is strictly prohibited unless for personal offline purposes.
Single photos may be used, provided that full credit is given to LowCarbYum.com along with a link back to the original content.
First Published: March 4, 2016… Last Updated: February 13, 2020
Lisa MarcAurele has been creating keto friendly recipes since 2010. She enjoys experimenting in the kitchen to create low sugar foods that taste like high carb favorites!
Pete says
What is this left over Corn Beef and Cabbage?
Lisa MarcAurele says
The casserole is generally made with leftover corned beef. You can use leftover cabbage too from St. Patrick’s Day dinner.
Steven says
Fantastic, my wife isnt a fan of potatoes and cauliflower is a great idea, thank you! We always have left over beef mince so will give this a try. I would probably slow cook it as an alternative to really infuse the flavours.
Beth.H says
Looks good, I have some leftover corn beef and cabbage sitting in my fridge already. I might add a little Irish cheddar to round it out. 🙂
Lisa says
The addition of Irish cheddar sounds fabulous!
Rose says
OMG! That was my first thought: add Irish Cheddar! hehehe.
Lisa says
That would be a yummy add I’m thinking.
Lea says
Thanks for the wonderful recipes! One way to eat more cabbage is to ferment it for sauerkraut — it’s super-easy to do, super-healthy, and tastes tons better than any store-bought kraut. I also love roasting cauliflower and broccoli and then sprinkling with parmeson. Yum!
Lisa says
You know, I never thought to make home made sauerkraut. I’ve got to try that. I love it. Roasted veggies with parmesan is one of my favorites!
Alicia says
What a great idea! Looks very filling too. I’ve been obsessed with cauliflower lately. And your right…cauliflower and cabbage do not make the house smell very welcoming. Phew!
Lisa says
I’m glad I’m not the only one obsessed with cauliflower! 🙂