We first discovered colcannon on a trip to Ireland a few years ago. We were so surprised at how cooked cabbage can actually make mashed potatoes even better! These mashed potatoes are rich and creamy and sure to become a family favorite.
Place the potatoes in a large pot with enough water to cover the potatoes. Add the salt to the water.
Bring water to a boil and cook until potatoes are very tender, about 15-20 minutes.
Drain the potatoes and set aside.
Return the pot to the stove along with 3 tablespoons of butter. Once the butter has melted add the cabbage to the pot and cook, stirring often, until wilted, about 5 minutes.
Add the green onions and cook for 1 minute more.
Return the potatoes to the pot along with the milk and cream. Mash until smooth and creamy. Add additional milk or cream to reach your desired consistency.
Season with salt and pepper to taste and serve with remaining butter.
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Notes
You may swap the cabbage for chopped kale, if preferred. Spinach and other leafy greens can also be substituted, though they're not as traditional.Add more milk, butter, or cream to reach the desired consistency you prefer. Be sure to season pretty liberally with the salt. Potatoes are fairly bland on their own and need a good amount of salt to taste right.