Colcannon with Garlic Butter and Scallions

By AislePrompt Editorial · Published 2026-04-26 · Updated 2026-04-26

A creamy Irish mashed potato dish blended with sautéed cabbage and scallions, enriched with garlic butter for a comforting side. This Irish-inspired St. Patrick’s Day recipe (vegetarian), ready in about 35 minutes, pairs russet potatoes, peeled and quartered, green cabbage, shredded, scallions, thinly sliced for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 290 calories and feeds 6, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Ingredients

• 2 lbs russet potatoes, peeled and quartered
• 3 cups green cabbage, shredded
• 4 scallions, thinly sliced
• 6 tbsp unsalted butter
• 1/2 cup whole milk
• 3 garlic cloves, minced
• 1 1/2 tsp salt
• 1 tsp black pepper

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Instructions

1. Step 1: Place 2 lbs peeled and quartered russet potatoes in a large pot, cover with cold water, add 1 tsp salt, and bring to a boil over high heat. Cook for 15-18 minutes until potatoes are fork-tender.
2. Step 2: While potatoes cook, melt 4 tbsp unsalted butter in a large skillet over medium heat. Add 3 minced garlic cloves and 3 cups shredded green cabbage, sautéing for 6-8 minutes until cabbage softens and edges caramelize slightly; stir in 4 thinly sliced scallions during last minute.
3. Step 3: Drain potatoes and return to pot. Mash with 1/2 cup whole milk, remaining 2 tbsp butter, 1/2 tsp salt, and 1 tsp black pepper until creamy but still slightly textured.
4. Step 4: Fold the sautéed cabbage mixture into the mashed potatoes gently, adjust seasoning with additional salt and pepper if needed, then serve warm as a traditional Irish side dish.