Colcannon {Perfect Irish Mashed Potatoes}

You know those side dishes that completely steal the show at dinner? That's exactly what happened the first time I made this colcannon recipe in my Nashville kitchen. I'd been wanting to try a traditional Irish potato dish for months, and when St. Patrick's Day rolled around last March, I finally went for it. John took one bite and said, "This is not leaving the rotation." He wasn't wrong.

Colcannon is one of those recipes that sounds fancy but is really just good, honest comfort food. Think light and fluffy Irish mashed potatoes loaded with sautéed cabbage, spring onions, plenty of butter, cream, and fresh chives. It's the kind of dish that makes a regular weeknight dinner feel special without any extra fuss.

What I love most is how simple this comes together. If you're a fan of creamy potato sides, you'll also want to check out my Best Mashed Potatoes for another go-to version. But this colcannon? It's got that extra layer of flavor from the cabbage and spring onions that takes mashed potatoes to a whole different place.

Jump to:

• Why You'll Love This Colcannon Recipe
• What You Need For This Irish Colcannon Recipe
• How To Make The Best Colcannon Step By Step
• Storage And Reheating Tips
• Tips And Variations For Your Colcannon Recipe
• Frequently Asked Questions About Colcannon
• Recipes You May Like
• Time To Make This Classic Irish Colcannon
• Colcannon

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Why You'll Love This Colcannon Recipe

• Ready in just 35 minutes from start to finish, so it fits right into a busy weeknight
• Buttery, creamy, and ridiculously fluffy — nothing gluey or heavy about this one
• Simple grocery store ingredients that you probably already have on hand
• A real crowd-pleaser — Bradley went back for thirds, and Amy actually asked for more vegetables (I nearly fell over)
• Works with any main dish — we've had it alongside roast chicken, grilled steak, and even just with a fried egg on top
• Makes the best leftovers — honestly, they might taste even better the next day with that crispy reheated edge

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What You Need For This Irish Colcannon Recipe

Here's everything you'll need. Nothing unusual, nothing hard to find.

For the colcannon:

• 1 kg (2.2 lb) potatoes — peeled and cut into large chunks
• 4 garlic cloves — peeled and chopped (see notes for pre-prepared option)
• 200 g (7 oz) butter — the real stuff makes all the difference
• 300 g (10 oz) cabbage — finely sliced
• 100 g (3.5 oz) spring onions — finely chopped, including the green parts
• 100 ml (0.5 cups) single cream — light cream if you're in the US
• 20 g (4 tsp) fresh chives — chopped finely
• Sea salt flakes and freshly ground black pepper — don't be shy here

To garnish:

• A pat of butter and a sprinkling of fresh chives

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How To Make The Best Colcannon Step By Step

Here's the thing about this traditional colcannon — it's basically foolproof. I've made it at least a dozen times now and it turns out perfect every single time. Just follow these steps and you're golden.

Boil The Potatoes

1. Place your potato chunks and garlic cloves into a large pot.
2. Cover with cold water (starting with cold water is important — it helps the potatoes cook evenly all the way through).
3. Bring to a boil and cook for 15 to 20 minutes until the potatoes are fork-tender.

Sauté The Cabbage And Spring Onions

4. While the potatoes are bubbling away, melt 100g (3.5 oz) of butter in a frying pan over medium heat.
5. Add the finely sliced cabbage and chopped spring onions to the pan.
6. Sauté for 3 to 4 minutes until everything is softened but still has a little bite. (You don't want mushy cabbage — trust me on this one.)

Mash And Combine Everything

7. Drain the potatoes well and return them to the pot. Leave the garlic in — it mashes right into the potatoes and adds so much flavor.
8. Mash the potatoes until smooth. I use a potato ricer here because it gives you the fluffiest results without overworking the potatoes.
9. Add the sautéed cabbage and spring onions — including all that gorgeous melted butter from the pan — straight into the mashed potatoes.
10. In the same frying pan, warm the remaining butter and cream together until the butter is just melted.
11. Pour the warm butter and cream mixture into the potato and cabbage bowl.
12. Toss in the fresh chives and add plenty of salt and pepper. Stir until everything is thoroughly combined.
13. Serve immediately with an extra pat of butter melting on top and a scattering of chives.

I'm not kidding when I say the butter on top is non-negotiable. That little pool of melted butter soaking into the colcannon is what makes this dish really sing.

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Storage And Reheating Tips

Let's be real — if you're feeding a family like mine, leftovers aren't always guaranteed. But on the rare occasion there's some left, here's what works.

Store any leftover colcannon in an airtight container in the fridge for up to 3 days. The flavors actually get better overnight as everything melds together.

To reheat, I like to spread the colcannon in an oven-safe dish and warm it at 350°F (180°C) for about 15 minutes. You get this beautiful crispy golden top while the inside stays creamy. You can also reheat it in a pan on the stovetop with a little extra butter — because why not?

For freezing, portion the colcannon into freezer-safe containers and it'll keep for up to 2 months. Thaw overnight in the fridge before reheating.

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Tips And Variations For Your Colcannon Recipe

After making this Irish potato recipe more times than I can count, I've picked up a few tricks that really make a difference.

• Use a potato ricer instead of a masher. This was a game changer for me. It gives you that perfectly fluffy texture without the risk of gluey, overworked potatoes.
• Don't skip the garlic. Boiling it right alongside the potatoes is such an easy way to build flavor without any extra steps.
• Try kale instead of cabbage for a slightly earthier twist. I did this once when the grocery store was out of cabbage and it was honestly just as good.
• Add crispy bacon bits on top if you're feeling extra. Bradley is convinced this is the only way to eat colcannon now.
• Swap spring onions for leeks if that's what you have. Slice them thin and sauté them the same way — beautiful results.

Have you ever tried adding a fried egg on top of a bowl of colcannon? It sounds a little odd, but it makes an amazing quick lunch. The runny yolk mixes into the potatoes and it's pure comfort.

One thing I'd avoid — don't use a food processor or blender for the potatoes. I made that mistake early on in cooking school and ended up with something closer to wallpaper paste than mashed potatoes. A ricer or even a regular hand masher is all you need.

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Frequently Asked Questions About Colcannon

What Is Colcannon Made Of?

Colcannon is a traditional Irish side dish made from mashed potatoes mixed with sautéed cabbage, spring onions (also called scallions), butter, cream, and fresh chives. It's simple, hearty, and packed with flavor. I always use plenty of butter and a good amount of salt — that's really what makes it taste like the real deal.

Can You Make Colcannon Ahead Of Time?

Yes, and it actually works really well. You can prepare the colcannon, transfer it to an ovenproof dish, and keep it warm in the oven until you're ready to serve. The bonus? It develops a lovely crispy topping that everyone fights over. Last Thanksgiving, I made it two hours early and it was the first side dish to disappear.

What Is The Difference Between Colcannon And Regular Mashed Potatoes?

The main difference is the addition of sautéed cabbage and spring onions. Regular mashed potatoes are just potatoes, butter, and cream. Colcannon folds in those extra vegetables, which gives it more texture, more flavor, and makes it a proper Irish comfort food dish rather than a plain side.

How Do You Keep Colcannon From Getting Lumpy?

Two things have worked perfectly for me. First, use a potato ricer instead of a standard masher — it breaks down every single lump. Second, always start your potatoes in cold water before bringing them to a boil. This makes sure they cook evenly from the outside in, so you don't end up with hard centers and mushy outsides.

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Recipes You May Like

• Garlic Butter Melting Potatoes — If you love buttery potato sides as much as we do, these crispy-on-the-outside, melt-in-your-mouth potatoes are a must-try.
• Brussels Sprouts With Bacon — Another veggie side dish that even the picky eaters in your house will actually ask for again.
• Creamy Lemon And Herb Pot Roasted Chicken — This is what I serve alongside colcannon for a complete Sunday dinner that feels special without a ton of work.

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Time To Make This Classic Irish Colcannon

This colcannon recipe has become one of those dishes I come back to over and over again. It's warm, it's buttery, and it's the kind of comfort food that makes everyone at the table happy. Whether you're making it for St. Patrick's Day, a holiday dinner, or just a random Tuesday because you want something cozy, it won't let you down.

Give this a try this week and let me know what your family thinks! I'd love to hear if your kids are as surprised by how much they love cabbage in their potatoes as Amy was.

Don't forget to save this recipe on Pinterest so you can find it again later!

Happy cooking, and here's to many more delicious meals with your loved ones.

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