welsh onion cake

How To Make welsh onion cake

• Step 1
  Heat about 1/4 of the butter in a large pan, set over medium heat.
• Step 2
  Sweat the onions with a little salt and the rosemary sprig. Slowly cook on a gentle heat with a lid on for about 20 minutes. Remove rosemary and set aside.
• Step 3
  Grease an oven proof dish and on the bottom of the dish, place a thick layer of potatoes, well seasoned with salt and pepper.
• Step 4
  Add a layer of onions.
• Step 5
  Dot each layer with butter and thyme (if using), and repeat this again, or until the dish is full, ending with a layer of potatoes.
• Step 6
  The top layer should also be dotted with butter, using more than given above, if necessary. Cover with a lid or foil and bake in a moderate oven (350F.) for about one and a half hours, removing the lid for the last half hour.
• Step 7
  Note: The variety of potato makes it difficult to give a precise cooking time: very floury ones can cook in 1 hour where as waxy ones will take longer. If using the cheese, sprinkle a little bit on each layer.
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