Colcannon is an Irish dish made by mixing mashed potatoes with kale. And lots of butter. I put even more butter on top. Try this for St. Patrick’s Day.
Colcannon is the perfect side dish for St. Patty’s Day. Or any day that you are trying to jazz up your mashed potatoes.

What Is Colcannon?
Colcannon is a mixture of mashed potatoes and sautéed kale or cabbage that exists as an excuse to eat butter. You see, there’s not just butter mashed into the potatoes. No, that’s not enough. To serve colcannon you smear butter onto the top of each serving so that it melts into a golden puddle. When you eat it your goal is to get melted butter onto each spoonful.
What To Serve With Colcannon
These buttery mashed potatoes are a perfect side dish for Corned Beef and Cabbage (we have a soup version!) or alongside ham or pork.
If you like this recipe, I think you’ll also love these Potatoes with Lots of Dill.
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Colcannon
- Prep Time: 10 minutes
- Cook Time: 20 minutes
- Total Time: 30 minutes
- Yield: 6 servings 1x
- Category: Side Dish
- Method: Stovetop
- Cuisine: Irish
DESCRIPTION
Colcannon is a buttery blend of potatoes and kale with a lot of butter. And then some more butter. It’s a traditional Irish dish and is perfect for St. Patrick’s Day (and any other time you need an excuse to eat butter).
Listen to me explain briefly about how to make this dish, with some great tips along the way, by clicking the play button below:
Ingredients
- 3 lbs. potatoes (about 5–7 medium baking potatoes)
- Salt
- 2 Tbsp. salted butter, plus more for serving
- 4 cups roughly chopped kale
- ½ cup chopped green onions
- ½ – ¾ cups milk
Instructions
- Peel the potatoes an cut them into 2 inch chunks. Put them in a large pot with 2 teaspoons of salt and enough cold water to cover them. Partially cover the pot and bring it to a boil over high heat.
- Remove cover and reduce heat to a simmer. Cook until potatoes are fork tender. Drain and leave them in the colander.
- Add the 2 tablespoons of butter to the pot and put it over medium heat until it melts. Add the kale and 1/2 teaspoon of salt. Use tongs to stir it until it is well-wilted, 3-4 minutes.
- Add the green onions and cook for 30 seconds more.
- Add the drained potatoes and mash them. Stir in 1/2 cup of milk. Taste. Add more milk to make it moister and more salt if desired.
- Transfer to soup bowls and dot each portion with a slice of cold butter.

Megan {Country Cleaver} says
I love the kale addition to this colcannon! What a great healthy twist!
Meagan @ A Zesty Bite says
What a fun side dish and that looks great with the kale in it.