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Rumbledethumps (Cheese & Potato Casserole)

Rumbledethumps is classic Scottish comfort food: fluffy mashed potatoes folded with soft cabbage and sweet onion, then baked under a golden layer of cheese.

It is simple, hearty, and perfect for colder evenings. Serve as a satisfying main with a salad, or as a rich side with roast meats.

Ingredients

  • Black Pepper, to taste
  • 50 g Butter plus extra for greasing
  • Salt, to taste
  • 80 ml Milk warm
  • 180 g Cheddar Cheese grated
  • 300 g Savoy Cabbage shredded
  • 900 g Potatoes peeled and chopped
  • 1 large Onion finely sliced

Method

15m45m1h
  1. Heat oven to 200°C (180°C fan) and lightly grease a baking dish.
  2. Boil the potatoes in salted water for 15–18 minutes until tender, then drain.
  3. Meanwhile, blanch shredded cabbage for 3–4 minutes until softened and drain thoroughly.
  4. Cook sliced onion in half the butter over medium heat until soft and sweet.
  5. Mash potatoes with remaining butter and warm milk until smooth; season with salt and black pepper.
  6. Fold in cooked cabbage and onions, then transfer to the prepared baking dish.
  7. Top evenly with grated cheddar.
  8. Bake for 20–25 minutes until hot through and golden on top.
  9. Rest 5 minutes before serving.

Notes

Drain the cabbage well before mixing to keep the casserole from turning watery.

For extra colour, finish under the grill for 2–3 minutes after baking.

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