Colcannon (Irish Mashed Potatoes) Recipe
Colcannon (Irish Mashed Potatoes) is the sort of dish that makes you want to pull up a stool at a cozy kitchen table and settle in for a bit. Creamy potatoes meet ribbons of buttery cabbage and flecks of green onion, all crowned with a generous pat of melting butter. It’s hearty, rustic, and joyfully simple — yet deeply comforting, with every spoonful delivering a taste of Irish tradition. Whether you’re looking to celebrate your heritage, shake up your usual mash, or simply explore the magic of humble ingredients transformed, this is bound to become a tried-and-true favorite.

Ingredients You’ll Need
You don’t need anything fancy for Colcannon (Irish Mashed Potatoes) — just a handful of essentials that each play a starring role. Good potatoes and real butter make it lush, while cabbage and green onions add vibrant color and gentle sweetness.
- Potatoes: Yukon Gold or Russet potatoes are the go-to for extra creamy, fluffy mash — peel and cut them for even cooking.
- Unsalted butter: Quality butter is non-negotiable; it’s the magic that gives this dish its richness and classic Irish flavor.
- Whole milk: Warming the milk ensures your mashed potatoes stay silky smooth — substitute in a splash of cream for extra decadence if you like.
- Green cabbage: Thinly sliced, it softens beautifully and melds right into the mash, giving Colcannon its signature character and a pop of color.
- Green onions: These brighten everything up — add them in with the cabbage for a subtle zing and gorgeous green flecks.
- Salt and black pepper: Never underestimate the power of seasoning; taste as you go for just the right balance.
- Chopped fresh parsley (optional): A final sprinkle adds freshness and flair, though the dish shines just as brightly without.
How to Make Colcannon (Irish Mashed Potatoes)
Step 1: Cook the Potatoes
Start by peeling and chopping your potatoes into evenly sized chunks. This helps them cook at the same pace. Place them in a large pot, cover with cold water, and toss in a generous pinch of salt — this is key for well-seasoned mash. Bring to a boil, then let them gently simmer for 15 to 20 minutes, or until you can easily pierce them with a fork. Once tender, drain and return them to the hot pot for a minute to steam dry. This essential step gets rid of excess water, so your Colcannon (Irish Mashed Potatoes) are creamy, never soupy.
Step 2: Sauté Cabbage and Green Onions
While your potatoes cook, grab a big skillet and melt a couple of tablespoons of butter over medium heat. Add your thinly sliced cabbage and cook, stirring, until it’s soft but not overly wilted — about 5 minutes. Toss in your green onions and let those flavors mingle for another 2 minutes. This not only sweetens and softens the vegetables, it also infuses the butter with incredible flavor that will swirl all through the finished mash.
Step 3: Warm the Milk
In a small saucepan, gently warm the milk over low heat. Incorporating warm, rather than cold, milk into your potatoes helps keep that dreamy, smooth consistency intact. If you’re feeling indulgent, swap out a splash of milk for heavy cream to make your Colcannon (Irish Mashed Potatoes) even more luxurious.
Step 4: Mash and Mix
With everything prepped, it’s time for some satisfying mashing! Use a potato masher or ricer for best texture, then gradually stir in the warmed milk and the remaining butter. Work until you have a mash that looks lusciously smooth and inviting. Fold in the sautéed cabbage and onions so every bite is dotted with velvety veg, then season generously with salt and black pepper until it tastes just right.
Step 5: Garnish and Serve
Transfer your Colcannon (Irish Mashed Potatoes) to a bowl or platter. Make a little well in the center, add an extra pat of butter if you wish, and watch it slowly melt into a golden puddle. Finish with a scattering of fresh chopped parsley for a burst of color and earthy freshness. Serve piping hot and let everyone dive in!
How to Serve Colcannon (Irish Mashed Potatoes)

Garnishes
A classic finish for Colcannon (Irish Mashed Potatoes) is a simple pat of butter in the center, letting everyone scoop a bit with each serving. If you love a fresh and lively flourish, a handful of chopped parsley does the trick. You could also sprinkle over a little extra sliced green onion for a peppery bite or, for something special, add crispy bacon bits on top before bringing it to the table.
Side Dishes
Colcannon (Irish Mashed Potatoes) is a star on its own, but really shines alongside savory mains. Serve it with corned beef for a St. Patrick’s Day feast, juicy sausages, roasted chicken, or any slow-cooked beef or pork dish. For a totally vegetarian table, pair it up with roasted root veggies or grilled mushrooms for a dinner that feels both rustic and satisfying.
Creative Ways to Present
For a traditional touch, mound the Colcannon (Irish Mashed Potatoes) in a serving bowl with a deep well of butter. Or, get creative: pipe individual servings into pretty swirls, shape them into crispy cakes and pan-fry, or spoon into ramekins and crisp the tops under the broiler. No matter how you plate it, those buttery potatoes and emerald flecks are bound to draw applause.
Make Ahead and Storage
Storing Leftovers
Leftover Colcannon (Irish Mashed Potatoes) keeps beautifully. Simply scoop everything into an airtight container and refrigerate for up to three days. The flavors actually meld and deepen overnight, making tomorrow’s helping almost as satisfying as the first.
Freezing
You can freeze Colcannon (Irish Mashed Potatoes) for up to a month. Cool it completely, then transfer to a freezer-safe bag or container. Flattening the bag helps it freeze more quickly (and saves space). When you’re ready for a warm bowl of comfort, just thaw in the fridge overnight.
Reheating
To reheat, scoop into a saucepan over low heat, stirring occasionally and adding a splash of milk to bring back the creaminess. Alternatively, microwave in short bursts, stirring in between, until everything is hot and smooth again. If you have extra butter on hand, now’s the time to add another pat for that fresh-from-the-pot flavor.
FAQs
Can I use another type Side Dish
Absolutely! While Yukon Gold and Russet potatoes are classic choices for Colcannon (Irish Mashed Potatoes), red potatoes also work well if you don’t mind a slightly waxier texture. Just stick to starchy or all-purpose varieties for the creamiest result.
Is it possible to make a vegan version?
Yes, you can easily make this dish vegan: use plant-based butter and swap the whole milk for a creamy non-dairy alternative such as oat or soy milk. The end result is just as cozy and comforting.
What’s the best way to slice the cabbage?
Aim for very thin ribbons — a sharp knife or mandoline does the trick. Thinner cabbage wilts quickly and blends more harmoniously into the potatoes, keeping every spoonful balanced.
Can I add other vegetables or herbs?
Definitely! Some folks like to mix in kale instead of cabbage for a slightly earthier flavor, or add chives and dill for an herbal kick. Personalize your Colcannon (Irish Mashed Potatoes) to suit your own taste and make it your own.
How can I avoid gluey mashed potatoes?
Mash the potatoes while they’re still hot and avoid overworking them with a hand mixer, which can make them gummy. A classic potato masher or ricer gives you silky, fluffy mash every time.
Final Thoughts
If you’re craving something soul-satisfying and simple, Colcannon (Irish Mashed Potatoes) are the answer. It’s a side that brings together everything we love about comfort food, seasoned with tradition and a little warmth from your own kitchen. Give it a try and let it become a new favorite to share, whatever the occasion!
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Colcannon (Irish Mashed Potatoes) Recipe
- Total Time: 40 minutes
- Yield: 6 servings 1x
- Diet: Vegetarian, Gluten-Free
Description
Colcannon is a classic Irish dish that combines creamy mashed potatoes with sautéed cabbage, green onions, and butter. This comforting and flavorful side dish is perfect for St. Patrick’s Day or any cozy meal.
Ingredients
Potatoes:
- 2 pounds potatoes (Yukon Gold or Russet), peeled and cut into chunks
Butter:
- 4 tablespoons unsalted butter, divided
Milk:
- 1 cup whole milk
Cabbage:
- 3 cups green cabbage, thinly sliced
Green Onions:
- 4 green onions, thinly sliced
Seasoning:
- Salt and black pepper to taste
Garnish:
- Chopped fresh parsley for garnish (optional)
Instructions
- Cook Potatoes: Boil potatoes until fork-tender, then drain and mash.
- Sauté Veggies: Cook cabbage and green onions in butter until softened.
- Combine: Mix mashed potatoes with warm milk, butter, and sautéed veggies.
- Season: Season with salt and pepper to taste and garnish with parsley.
Notes
- For a richer flavor, substitute some milk with heavy cream.
- Colcannon pairs well with corned beef, sausages, or roasted meats.
- Prep Time: 15 minutes
- Cook Time: 25 minutes
- Category: Side Dish
- Method: Stovetop
- Cuisine: Irish
Nutrition
- Serving Size: 1 cup
- Calories: 220
- Sugar: 4g
- Sodium: 250mg
- Fat: 8g
- Saturated Fat: 5g
- Unsaturated Fat: 3g
- Trans Fat: 0g
- Carbohydrates: 33g
- Fiber: 4g
- Protein: 4g
- Cholesterol: 20mg