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15 Minute Steak and Caramelised Onion Sandwich

Category: food

The perfect quick and tasty meal for when you’re strapped for time. While they’re perfect on their own, these sandwiches also go great with some golden tasty fries or a simple garden salad.

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  • Serves: 4
  • Time needed: 15 min
  • Difficulty Easy

  • 2 medium brown onions
  • Olive oil (for the pan)
  • 2 tablespoons of brown sugar
  • 1-2 tablespoons of balsamic vinegar
  • Salt and pepper
  • 4 x 1 cm thick sirloins
  • 2 small ciabatta loafs
  • Mayonnaise (to spread)


  • Step 1

    Heat oil in a large fry pan over medium heat. Add the chopped onions and a good pinch of salt and pepper and cook for about 5 minutes.

  • Step 2

    While that’s happening, heat a little oil in another pan. Season both sides of the steaks with salt and pepper, and flash fry for 1-2 minutes on each side. 

    Steak Sandwich Cut

  • Step 3

    When the onions are golden, add sugar and balsamic to start the caramelisation. Cook for a further 5-10 minutes until the onions are sticky and caramelised and the sugar has dissolved.

    Steak Sandwich Onions

  • Step 4

    Slice the ciabattas in half lengthways and add a little mayonnaise. Spread the bottom half with the onions and sit the steaks on top (you can slice them or leave them whole).

    Serve hot and fresh!

    Steak Sandwich 6

    For more delicious and quick recipes you can make in under 15 minutes, click here. And, why not share your next seafood masterpiece by tagging #AtoZofMmmm on Facebook or Instagram.

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