This 4-ingredient slow cooker Irish colcannon is my kind of comfort food: creamy, buttery Yukon gold potatoes with just enough tender cabbage to feel like the real deal your Irish grandmother would recognize. Traditional colcannon comes from Ireland and usually mixes mashed potatoes with cabbage or kale, plenty of butter, and cream. Here, we lean on the slow cooker to do the work, so the potatoes turn golden and soft while you get everything else ready for the big day. With just a handful of ingredients and almost no fuss, you’ll have a cozy, family-friendly side dish that tastes like it simmered on Grandma’s stove all afternoon.
Serve these slow cooker Irish colcannon potatoes straight from the warm crock, with a generous extra drizzle of melted butter over the top and a sprinkle of fresh herbs. They’re perfect alongside corned beef, roast chicken, or a simple pan-seared pork chop. Add steamed green beans or roasted carrots to round out the plate, and some crusty bread or dinner rolls to swipe up every last bit of buttery potatoes. For the big day, set the slow cooker on warm at the table or buffet so everyone can help themselves, and pair with something crisp to drink, like sparkling water with lemon or a light beer.
4-Ingredient Slow Cooker Irish Colcannon PotatoesServings: 6
Ingredients
3 pounds Yukon Gold potatoes, peeled and cut into 1-inch cubes
3 cups thinly sliced green cabbage (about 1/2 small head)
1 cup heavy cream (or half-and-half for a lighter version)
8 tablespoons (1/2 cup) unsalted butter, plus 2–3 tablespoons melted for serving
1 1/2 teaspoons kosher salt, plus more to taste
1/2 teaspoon freshly ground black pepper
2 tablespoons chopped fresh parsley or chives, for serving (optional but recommended)
Directions
Lightly grease the inside of a 4- to 6-quart slow cooker with a bit of butter or nonstick spray to help keep the potatoes from sticking.
Add the cubed Yukon Gold potatoes and the sliced cabbage to the slow cooker, spreading them out as evenly as you can.
In a small saucepan or microwave-safe bowl, gently warm the heavy cream, 8 tablespoons (1/2 cup) butter, salt, and pepper just until the butter is melted and the mixture is warm but not boiling. This helps everything blend smoothly later.
Pour the warm cream and butter mixture evenly over the potatoes and cabbage. Give everything a gentle stir so the vegetables are lightly coated, but don’t worry about mixing perfectly.
Cover the slow cooker with the lid and cook on HIGH for 3–4 hours or on LOW for 6–7 hours, until the potatoes are very tender and the cabbage is soft. The potatoes should break apart easily with a fork.
Once the potatoes are tender, turn the slow cooker to WARM or OFF. Use a potato masher right in the crock to mash the potatoes and cabbage together until creamy. For extra-smooth potatoes, you can mash more thoroughly; for a rustic, old-fashioned feel, leave some small chunks.
Taste and adjust the seasoning with more salt and pepper if needed. If the potatoes seem too thick, stir in an extra splash of warm cream or a tablespoon or two of hot water until they reach your preferred creaminess.
Right before serving, drizzle 2–3 tablespoons of melted butter over the top so it pools on the creamy potatoes, then scatter chopped fresh parsley or chives over everything for a pretty, festive finish.
Serve the colcannon straight from the slow cooker on the warm setting, or transfer to a white serving dish for that cozy, just-like-Grandma’s-table look. Spoon some of the pooled butter and herbs over each serving.
Variations & Tips
For picky eaters, you can reduce the cabbage to 1 1/2 cups or chop it very finely so it blends into the potatoes; it will still give that traditional Irish flavor without big visible pieces. If you need to keep things lighter, swap half of the heavy cream for low-sodium chicken broth or whole milk, and cut the butter down to 6 tablespoons (add a little extra warm liquid if needed to keep it creamy). For extra flavor, stir in 2–3 sliced green onions or 1/4 cup finely chopped leeks when you add the cabbage. To make it ahead, cook and mash the potatoes completely, then keep them on WARM for up to 2 hours, stirring in a splash of warm cream if they thicken. For a slightly tangy twist that still feels old-fashioned, you can replace 1/4 cup of the cream with buttermilk—just warm it gently and don’t let it boil. If you’re cooking for a crowd on a holiday, double the recipe in a large slow cooker and extend the cook time by about 30–45 minutes, checking for tenderness. And if someone at your table wants more butter (there’s always one!), set a small dish of melted butter and extra herbs nearby so they can drizzle to their heart’s content.
