Sides, Vegan, Vegetarian

Caramelised Onions

Cooking method:

Ninja Zerostick Cookware
  • Prep Time: 5 mins
  • Cook Time: 55 mins
  • Total time: 1 hour
  • Skill Easy
  • Serves 2 people

Caramelised Onions

These delicious slow-cooked onions are great with sausages or as a topping on a cheese toastie or burger.

Recipe tags


  • 1 tbsp olive oil
  • 2 red onions, peeled, sliced
  • 1 tbsp soft brown sugar
  • 2 tbsp balsamic vinegar
  • Splash of water

Cooking mode

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  • Step 1

    Heat the Ninja 20cm frying pan on low heat, add oil and allow to preheat for 2-3 minutes until hot. When the pan is heated, add onions and cook for about 50 minutes. Stir the onions frequently until they are soft (they shouldn’t be too brown). 

  • Step 2

    When the onions are soft, stir in sugar and vinegar with a splash of water. Cook for another 5 minutes or until the water is absorbed.