Oven Baked 4-Ingredients Colcannon Casserole

The “Emerald Isle” 4-Ingredient Colcannon

This version uses a “Deep-Dish” bake to allow the edges to caramelize while the center stays light and fluffy.

CategoryDetails
Prep Time10 minutes
Bake Time20 minutes
Total Time30 minutes
Yield6 servings

🍴 The 4 Ingredients

  1. 24 oz Refrigerated Prepared Mashed Potatoes (or leftover homemade mash).
  2. 3 cups Green Cabbage (finely shredded).
  3. 1 bunch Green Onions (sliced—reserve the dark greens for garnish).
  4. ½ cup (1 stick) Unsalted Butter (melted).

(Salt and Pepper are “free” pantry staples!)


👩‍🍳 Instructions

1. The Cabbage Prep

  • Preheat your oven to 200°C (400°F).
  • In a skillet over medium heat, melt 2 tablespoons of the butter. Sauté the shredded cabbage and the whites of the green onions for about 4 minutes until soft and slightly translucent.

2. The Great Fold

  • In a large bowl, combine the prepared mashed potatoes, the sautéed cabbage/onion mix, and half of the remaining melted butter.
  • Season generously with salt and black pepper. Stir until the cabbage is evenly distributed throughout the potatoes.

3. The Casserole Build

  • Transfer the mixture to a greased 2-quart baking dish. Use a fork to create “peaks and valleys” across the surface—this increases the surface area for browning.

4. The Butter Bath

  • Pour the rest of the melted butter over the top of the potatoes. It will pool in the “valleys” you created, leading to extra-crispy, buttery pockets.

5. The Golden Bake

  • Bake for 20 minutes.
  • The Visual Cue: The “peaks” of the potatoes should be a dark golden brown, and the edges of the cabbage should be slightly charred. Garnish with the green onion tops before serving.

The “Bacon” Bonus: If you happen to have any of the Bacon Jam (Recipe 503) or just a few strips of bacon in the fridge, crumble them over the top in the last 5 minutes of baking. The smokiness of the bacon is the traditional partner to the sweetness of the cabbage.

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