Place ciabatta halves on a baking tray. Add a slice of cheese to two of them, then lightly brush the other two slices with oil. Place under the grill and broil until the cheese melts and the bread crisps.
Stack the cheesy slice with caramelized onions, then corned beef, followed by rocket/arugula, then topped with tomato slices. Spread the oiled slice with horseradish mayo, then fold over and enjoy!
Quick Demo
Notes
a) Corned Beef - If you're buying a regular 12oz/340g can of corned beef I typically slice that into 8 equal slices and use 6 of them. I find that gives you the perfect thickness. You can however slice the whole thing into 6 pieces or use all 8 slices.b) Can I use homemade/regular corned beef? - You sure can! You can even use regular leftover beef for this too.c) Horseradish Mayo - I recommend my homemade version of course! If you've only got horseradish then just use a very thin slither (it's quite pungent!). You can sub mustard if you'd prefer.d) Caramelized Onions - These balance out the saltiness with a hit of sweetness. Again, I recommend making your own. But if you're short on time just fry up some onions in a dollop of butter or drizzle of oil. The lower and slower you fry them the sweeter they'll be.e) Calories - per sandwich:
* Percent Daily Values are based on a 2000 calorie diet.
*Nutrition is based on the absence of salt unless stated as a measurement in the ingredients. Cost is worked out based on ingredients bought from UK supermarkets, then divided by the number of servings. In both instances these values are just for guidance. Please check out my FAQ Page for more info.