Oven Baked 4-Ingredients Colcannon Casserole

Introduction

If you love comforting potato dishes, this Oven Baked 4-Ingredients Colcannon Casserole is a simple and delicious recipe inspired by the traditional Irish dish Colcannon.
Colcannon traditionally combines creamy mashed potatoes with cabbage or kale, butter, and onions. This casserole version makes the dish even easier by baking everything together in the oven, creating a warm, creamy, and satisfying side dish that’s perfect for family dinners or cozy meals.

With just four ingredients, this recipe is quick to prepare, budget-friendly, and full of comforting flavor.

Ingredients

• 4 cups mashed potatoes
• 2 cups shredded cabbage
• 1 cup shredded cheddar cheese
• 4 tablespoons butter

Instructions

1. Preheat the oven: Preheat your oven to 375°F (190°C) and lightly grease a baking dish.
2. Cook the cabbage: In a skillet over medium heat, melt the butter and sauté the shredded cabbage for about 5–7 minutes until it softens.
3. Mix the ingredients: In a large bowl, combine the mashed potatoes, sautéed cabbage, and half of the shredded cheese. Mix until well combined.
4. Assemble the casserole: Spread the mixture evenly into the prepared baking dish.
5. Add the topping: Sprinkle the remaining cheese evenly over the top.
6. Bake: Bake for 20–25 minutes, or until the casserole is hot and the cheese on top is melted and lightly golden.
7. Serve: Remove from the oven, let it cool for a few minutes, and serve warm.

Description

This casserole is creamy, cheesy, and full of comforting flavors. The buttery cabbage blends beautifully with the mashed potatoes, while the melted cheese on top adds a rich and slightly crispy layer. It’s a wonderful side dish that pairs well with roasted meats, chicken, or even as a hearty vegetarian meal.

Tips

• Use leftover mashed potatoes to save time.
• Add green onions for extra flavor if you want a more traditional taste.
• Try kale instead of cabbage for a classic colcannon twist.
• Top with extra butter before serving for richer flavor.
• Bake in a cast-iron skillet for a rustic presentation.

Correction / Helpful Notes

• If your mashed potatoes are thick, add 2–3 tablespoons of milk to keep the casserole creamy.
• Do not overcook the cabbage before baking, or it may become too soft.
• Adjust the salt depending on how seasoned your mashed potatoes already are.

Enjoy

Serve this warm and comforting Oven Baked 4-Ingredients Colcannon Casserole with your favorite main dish and enjoy a simple recipe that brings traditional flavors to the table with very little effort. It’s perfect for weeknight dinners, holiday sides, or anytime you want a cozy homemade dish.