fbpx Print
clock clock iconcutlery cutlery iconflag flag iconfolder folder iconinstagram instagram iconpinterest pinterest iconfacebook facebook iconprint print iconsquares squares iconheart heart iconheart solid heart solid icon
Caramelised onions in a white bowl on a tea towel and white background

How to Caramelise Onions (No Sugar)

5 Stars 4 Stars 3 Stars 2 Stars 1 Star

5 from 2 reviews

I like to do this once a week to set myself up with the most delicious caramelised onions that are sweet, sticky and have a depth of flavour I LOVE.

  • Total Time: 55 minutes
  • Yield: 20 servings 1x

Ingredients

Units Scale
  • 1 kg onions
  • 60 ml olive oil
  • 1 tsp salt
  • 1 tbsp balsamic vinegar

Instructions

  1. Peel the onions, being sure to remove all of the dry, papery outer layers.
  2. Chop the onions in half from top to tail, then slice into half moons, again top to tail.
  3. Heat the olive oil on a medium high heat. Test it's hot enough by placing one piece of onion in to make sure it sizzles.
  4. Add the remaining onions and salt.
  5. Keep moving the onions around with tongues until they become soft and juicy.
  6. Leave for 1 to 2 minutes without stirring. If you get some browning, change to a spatula and scrape the pan. Leave again for 2 minutes.
  7. If you didn't get browning, leave for another 2 minutes. If you still down't get a little browning, turn the heat up a little.
  8. Be really careful not to burn the onions at this point. You should settle on a heat where you can leave the onions for 2 minutes and they develop some browning.
  9. Continue this process for 20 to 30 minutes. By this point you should see some good caramelisation. The whole batch should have gone various shades of brown.
  10. Turn the heat down to a low medium heat. Continue as before, leaving for 2 minutes at a time. This will create a deeper colour and caramelisation.
  11. After around 45 to 50 minutes total time you should have nicely caramelised onions. Remove from the heat and stir in the balsamic vinegar.
  12. These will store in the fridge in a sealed container for up to a week.
  • Cook Time: 55 minutes

Nutrition

  • Calories: 47
  • Sugar: 2
  • Sodium: 119
  • Fat: 3
  • Saturated Fat: 1
  • Carbohydrates: 5
  • Fiber: 1
  • Protein: 1