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Welsh potato cake

Welsh onion cake

Tracy Knatt
This Welsh onion cake is simple to make and layered with buttery, crispy, sliced potatoes and onions, with some grated cheese.
Course Side Dish
Cuisine British, Welsh
Servings 6 people

Equipment

  • A casserole dish or baking tray with sides

Ingredients
  

  • 100 g butter
  • 4 large potatoes
  • 2 onions
  • 100 g cheese

Instructions
 

  • First pre-heat your oven to around 180 degrees fan / Gas Mark 6. BUT, if you are already using your oven to roast your Sunday lunch, just maintain that temperature - this Welsh onion cake is hardy and can cope with whatever temperature you throw at it!
  • Firstly slice all of your potatoes as thinly as you can (but don't worry yourself too much if they are a bit thick - I don't use a mandolin or anything like that). I don't peel my potatoes either - it's up to you if you want to.
  • Slice your onions thinly and grate your cheese.
  • Generously butter your dish.
  • Layer your buttered dish with a layer of potatoes (I use up the halves and scraps of potato for this bottom layer, which won't really be seen).
    Welsh potato cake inside layer
  • Add a layer of sliced onions and some grated cheese, then season with salt and pepper.
  • Repeat with more layers of potato, onion, cheese and seasoning (I normally get 2 layers of each plus a final one of potatoes).
  • Try to save the nicest looking whole slices of potato to top the dish, as this will be the layer you see when you take the dish to the table (if you care about that kind of thing!).
  • Top the Welsh onion cake with a few knobs of butter and cover loosely with tin foil.
    Welsh potato cake top
  • Bake for one hour covered, and then for a further 30 minutes uncovered, leaving you with soft potatoes and onions underneath a buttery, crispy layer of potatoes (my favourite bit).

Notes

Serve immediately, although this is pretty epic served the following day, so enjoy your leftovers.
Keyword cheese, easy recipe, onions, potatoes