This slow cooker colcannon cream potatoes recipe takes a beloved Irish classic and turns it into an easy, mostly hands-off St. Patrick’s Day side dish. Traditionally, colcannon is a rustic mash of potatoes with cabbage or kale, scallions, and butter. Here, we blend Savoy cabbage with Irish cream, scallions, nutmeg, and white pepper into one silky sauce, then simply pour that mixture over raw diced golden potatoes in a slow cooker. A few hours later, you have tender, creamy potatoes with all the cozy, slightly indulgent flavor of a pub-style Irish side, without hovering over the stove.
Serve these colcannon cream potatoes alongside corned beef, roasted sausages, or a simple pan-seared salmon for a full St. Patrick’s Day spread. They’re also lovely with roasted carrots or buttered peas to keep the plate colorful and balanced. A crisp green salad with a tangy vinaigrette helps cut the richness, and a slice of crusty bread or soda bread is perfect for soaking up any extra sauce. If you’re pouring drinks, a dry hard cider, stout, or a glass of chilled white wine pairs nicely with the buttery, cabbage-laced potatoes.
Slow Cooker Colcannon Cream PotatoesServings: 6
Ingredients
3 pounds golden potatoes, scrubbed and cut into 1/2-inch dice
1 tablespoon unsalted butter, for greasing the slow cooker
2 cups finely shredded Savoy cabbage (packed)
1 cup whole milk
1 cup heavy cream
1/2 cup Irish cream liqueur
4 tablespoons unsalted butter
4 scallions, thinly sliced (white and green parts divided)
1/2 teaspoon ground nutmeg
1/2 teaspoon ground white pepper
1 1/2 teaspoons kosher salt, plus more to taste
Directions
Lightly grease the inside of a 4- to 6-quart slow cooker with 1 tablespoon unsalted butter. Add the diced golden potatoes in an even layer and set aside.
Make the cabbage puree: In a medium saucepan, combine the shredded Savoy cabbage, whole milk, and heavy cream. Bring to a gentle simmer over medium heat, stirring occasionally, until the cabbage is very tender, 8 to 10 minutes. Do not let it boil hard; you want a soft simmer.
Add 4 tablespoons unsalted butter and the white parts of the sliced scallions to the hot cabbage mixture. Stir until the butter melts.
Carefully transfer the hot cabbage mixture to a blender or use an immersion blender directly in the pot. Blend until completely smooth and velvety, forming a pale green cabbage puree.
Stir the Irish cream liqueur, ground nutmeg, ground white pepper, and kosher salt into the hot cabbage puree until fully combined. Taste and adjust seasoning with a pinch more salt or white pepper if needed. This is your single colcannon cream sauce.
Pour this one colcannon cream sauce evenly over the raw diced golden potatoes in the slow cooker, making sure as many potatoes as possible are coated or submerged. Gently shake the slow cooker or lightly stir to distribute without mashing the potatoes.
Cover and cook on HIGH for 3 to 4 hours or on LOW for 6 to 7 hours, until the potatoes are very tender when pierced with a fork and the sauce has thickened slightly.
Once cooked, gently stir the potatoes to coat them thoroughly in the creamy sauce. Some pieces will break down and thicken the mixture, which is what you want for a colcannon-style texture.
Stir in the green parts of the scallions just before serving for fresh onion flavor and color. Taste again and adjust salt and white pepper if desired.
Serve the colcannon cream potatoes hot straight from the slow cooker, or transfer to a warm serving dish and garnish with an extra sprinkle of scallions or a small knob of butter on top.
Variations & Tips
For a slightly lighter version, swap the heavy cream for half-and-half and reduce the butter to 2 tablespoons; the texture will be a bit looser but still comforting. If you prefer to skip alcohol, replace the Irish cream liqueur with additional whole milk plus 1 to 2 teaspoons of brown sugar and a splash of vanilla to echo the gentle sweetness. You can also introduce more greens by adding a handful of baby spinach or kale to the cabbage mixture during the last few minutes of simmering before pureeing. For a smokier, heartier dish, fold in 1/2 cup of crisp-cooked, crumbled bacon or diced ham just before serving. If you like a browned top, transfer the finished potatoes to a buttered baking dish, sprinkle with a little grated Irish cheddar, and broil for 3 to 5 minutes until golden. Leftovers reheat well on the stovetop over low heat with a splash of milk to loosen the sauce, making them a practical make-ahead side for busy holiday gatherings.
