Why Slow Cooker Colcannon Is a Weeknight Winner
The potatoes get this creamy texture without turning into wallpaper paste. That’s the magic of LOW heat over a few hours.
I’m not gonna lie, I was skeptical about making mashed potatoes in the Crock Pot. But the Yukon Golds break down perfect, and the cabbage wilts into this sweet, tender situation that even Bennett will eat (most days).
✅ Hands-off cooking for 4 hours
✅ Creamy without constant stirring
✅ Can you make colcannon in a crock pot? Absolutely
✅ Irish butter makes it taste legit
✅ Perfect comfort food side for any protein
Let me show you what actually goes into this thing.
What Makes This Colcannon Work in the Slow Cooker
Slow cooker colcannon starts with good potatoes. That’s the foundation.
You don’t need fancy ingredients here, just solid basics from King Soopers. The key is letting the potatoes cook long enough that they’re tender but not gluey.
✔ Yukon Gold potatoes : hold their texture way better than russets in the slow cooker
✔ Savoy cabbage or kale : Savoy’s sweeter, kale adds a bit more bite
✔ Half-and-half and butter : makes it creamy without being heavy
✔ Water for steaming : keeps everything moist while it cooks LOW
Now let’s talk about how this actually comes together without babysitting it.
How to Layer Your Slow Cooker Colcannon Right
Making slow cooker colcannon is more forgiving than you’d think. Just don’t skip the water, or you’ll end up with dry, sad potatoes.
- Peel and quarter the potatoes, then add them to your Crock Pot
- Pour enough water over the potatoes to come about halfway up
- Cover and cook on LOW for 3 to 4 hours until the potatoes are fork-tender
- Drain most of the water, leaving just a splash at the bottom
- Add the chopped cabbage or kale on top of the potatoes
- Warm the half-and-half and butter together, then pour over everything
- Use a potato masher to mash it all together until creamy, season with salt and pepper
The whole mashing part at the end takes maybe five minutes. That’s it.
No wait, actually there’s a bunch of ways to tweak this depending on what you’ve got in the fridge or what sounds good.
Ways to Switch Up Your Slow Cooker Colcannon
The base recipe’s solid, but sometimes you want something a little different. Here’s what I’ve tried.
Slow Cooker Colcannon with Kale and Bacon
Cook four strips of bacon until crispy, crumble them up. Swap the cabbage for chopped kale (the curly stuff works great). Stir the bacon bits in right before serving.
Rachel makes this version when we’re having pork chops, and honestly the smoky bacon flavor hits different. Noah requests it specifically now.
Creamy Colcannon Slow Cooker with Butter
Up the butter to a half cup instead of a quarter. Use real Irish butter if you can find it at Sprouts, it’s got this richer, almost nutty taste.
Add an extra splash of warm milk at the end if it looks thick. Makes it silky smooth, like restaurant-level mashed potatoes but with that cabbage sweetness mixed in.
Once you’ve got your colcannon ready, you’re probably wondering what to serve alongside it.
What Goes Well with Slow Cooker Colcannon
At home, we always serve it with something simple. The colcannon’s already rich and filling, so you don’t need anything too fancy.
Corned Beef
Classic pairing, especially around St. Patrick’s Day menu planning. I’ll grab a corned beef brisket from Costco, throw it in another slow cooker with some spices, and boom, full Irish dinner with zero stress.
Chloe likes when we make this because the beef is so tender she can cut it with her fork. Bennett just eats the potatoes, but that’s normal.
Pan-Seared Beef Steaks
Quick weeknight move. Season some bone-in or boneless beef steaks with salt and pepper, sear them in a hot skillet for 3–4 minutes per side while the colcannon finishes on the keep-warm setting.
The buttery potatoes soak up the pork drippings if you spoon them over. Simple but satisfying after a long shift.
Roasted Chicken Thighs
Throw some chicken thighs in the oven at 425°F with olive oil, salt, and pepper for about 35 minutes. Serve them over the colcannon with a little parsley garnish if you’re feeling fancy.
This is my Sunday meal prep go-to. Make a big batch of colcannon, roast a bunch of chicken, portion it out for the week.
If you’re making this ahead or have leftovers (which happens a lot at our place), here’s how to store it properly.
Keeping Your Slow Cooker Colcannon Fresh
Slow cooker colcannon keeps really well, which is why I make a double batch most times. Reheats better than regular mashed potatoes, actually.
Storage
- At room temperature: Don’t leave it out more than 2 hours, especially with the dairy
- In the fridge: Transfer to an airtight container, lasts 4 to 5 days easy
- In the freezer: Good for up to 2 months, though the texture gets a little grainy when you thaw it
Reheating
Microwave works fine. Two-minute intervals, stirring between, add a splash of milk or half-and-half to bring back the creaminess.
Stovetop’s better if you’ve got time. Low heat, covered, stir occasionally, add a pat of butter. Tastes almost fresh.
Back in the Crock Pot on LOW for an hour works too, especially if you’re reheating a big batch for Sunday dinner.
Anti-Waste Tip
Mix leftover colcannon with shredded cheddar and form into patties. Pan-fry them in a little butter until golden and crispy on both sides. Noah calls them “potato cakes” and devours them for breakfast with eggs.
Got questions? Yeah, I had the same ones when I first started making this in the slow cooker.
Questions About Making Colcannon in the Crock Pot
When I told Rachel I was making mashed potatoes in the Crock Pot, she looked at me like I’d lost it. But it works, trust me.
Why are my slow cooker potatoes gummy?
Probably over-mashed or used too much water. Happened to me too until I learned to drain most of it and mash gently.
Can you make colcannon in a crock pot without it getting watery?
Yeah, just drain almost all the cooking water before adding the dairy. Leave maybe a quarter cup max at the bottom.
What’s the difference between slow cooker colcannon vs mashed potatoes?
Colcannon has cabbage or kale mixed in, plus scallions traditionally. It’s lighter and has more texture than plain mashed potatoes.
Can I add the cabbage at the beginning with the potatoes?
You could, but it’ll get mushy. I found that adding it in the last 30 minutes keeps it tender but not overcooked.
Full Slow Cooker Colcannon Recipe
This slow cooker colcannon is the kind of comfort food side that makes you want seconds even when you’re full. The Yukon Golds get creamy, the cabbage adds this subtle sweetness, and the warm milk and butter pull it all together into something that tastes way fancier than the effort you put in.
Slow Cooker Colcannon
Equipment
- 6-quart slow cooker
- potato masher
- small saucepan
- knife
- cutting board
Ingredients
- 2.5 pounds Yukon Gold potatoes about 8 medium potatoes, peeled and quartered
- 3 cups Savoy cabbage or kale chopped; or a mix of both
- 4 to 6 cups water enough to come halfway up the potatoes
- 3/4 to 1 cup half-and-half warmed with butter
- 1/4 cup unsalted butter
- salt and black pepper to taste
Instructions
- Peel the potatoes and cut them into quarters.
- Place the potatoes in a slow cooker and add enough water to come halfway up the potatoes.
- Cover and cook on LOW for 3 to 4 hours, until the potatoes are fork-tender.
- Drain most of the water, leaving about 1/4 cup in the cooker.
- Add the chopped cabbage or kale on top of the potatoes.
- In a small saucepan, warm the half-and-half and butter together until the butter melts.
- Pour the warm dairy mixture over the potatoes and cabbage.
- Mash everything together with a potato masher until creamy but still slightly chunky.
- Season with salt and pepper to taste, stir, and serve warm.
Notes
- For extra creaminess, stir in an additional splash of warm half-and-half just before serving.
- Savoy cabbage is sweeter and holds texture well; kale adds a bit more bite. Add greens near the end to avoid overcooking.
- Optional: Fold in sliced scallions at the end for a traditional touch.
- Keep on the warm setting for up to 2 hours; stir before serving to maintain texture.
- Variation: Add crispy crumbled bacon and swap cabbage for kale; or increase butter to 1/2 cup for a richer mash.
- Storage: Refrigerate in an airtight container 4–5 days; freeze up to 2 months (texture may become slightly grainy).
- Reheat gently in the microwave or on the stovetop with a splash of milk or half-and-half; add a pat of butter if desired.
- Leftover idea: Mix with shredded cheddar, form into patties, and pan-fry in butter for crisp potato cakes.
Made This Colcannon? Let Me Know How It Turned Out
That creamy, buttery bite with the tender cabbage mixed in. Hard to beat on a cold night in Denver.
If you try this slow cooker colcannon, hit the stars below and let me know what you thought. Did you use cabbage or kale? Did your kids actually eat the green stuff?
Snap a pic and tag #SlowCookComfort and @SlowCookComfort so I can see your version. Always curious how other people make it work.
And hey, if you want more recipes that cook while you’re handling life, sign up for the newsletter. New Crock Pot stuff every week. Talk soon.
