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Easy Scottish Potato Cabbage Casserole

Easy Scottish Potato Cabbage Casserole

Cozy layers of creamy mashed potatoes, sweet sautéed cabbage, and melty cheddar bake into a golden, comforting casserole. A simple Scottish-inspired side that easily stands in as a hearty meatless main.
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Prep Time: 20 minutes
Cook Time: 40 minutes
Total Time: 1 hour
Servings: 6

Ingredients
 

Main Ingredients

  • 2.25 lb russet potatoes, peeled and chopped
  • 1.5 tsp kosher salt divided
  • 4 tbsp unsalted butter divided
  • 1 tbsp olive oil
  • 1 cup yellow onion, diced
  • 6 cup green cabbage, thinly sliced
  • 2 tsp minced garlic
  • 0.75 cup whole milk, warmed
  • 1.25 cup shredded sharp cheddar cheese for mixing
  • 0.75 cup shredded sharp cheddar cheese for topping
  • 0.75 tsp black pepper, freshly ground
  • 0.25 tsp ground nutmeg optional
  • 0.25 cup sliced scallions for serving
  • 2 tbsp chopped fresh parsley optional

Instructions

Preparation Steps

  • Heat oven to 400°F. Grease a 9x13-inch baking dish.
  • Boil potatoes in a large pot of salted water until fork-tender, 12–15 minutes. Drain well and let steam off.
  • Warm 2 tbsp butter and the olive oil in a large skillet over medium heat. Soften the onion, about 3 minutes.
  • Stir in cabbage and 1/2 tsp salt. Cook, stirring, until wilted and lightly golden at edges, 8–10 minutes. Add garlic for the last minute.
  • Mash potatoes with remaining 2 tbsp butter and the warm milk until creamy. Season with remaining salt, pepper, and nutmeg.
  • Fold the cabbage mixture and 1 1/4 cups cheddar into the potatoes. Spread into the prepared dish.
  • Sprinkle with remaining 3/4 cup cheddar. Bake until bubbling and browned on top, 15–20 minutes.
  • Rest 5 minutes. Finish with scallions and parsley, then serve hot.

Notes

Swap part of the cheddar for smoked cheddar for a deeper flavor, or add crisp bacon crumbles on top before baking. Leftovers keep well covered in the fridge for up to 4 days; reheat in a 350°F oven until warmed through.
This recipe is an original creation inspired by classic Easy Scottish Potato Cabbage Casserole flavors. All ingredient ratios and instructions are independently developed.