The best healthy baked onion bhajis

A deliciously healthy onion bhaji, using sweet potato to make a healthy and tasty batter 

I’ve been wanting to make a nice baked version of an onion bhaji for a long time- I’ve never made any type of onion bhaji before, so this recipe was completely made up. I didn’t want to use chickpea flour (to keep them Slimming World friendly), and I also wanted to bake them rather than fry them.

I made a batter using sweet potato, egg and spices, and hoped for the best! I was really happy with the result, they came out of the oven crispy, and genuinely delicious!

Try these served with Beef MadrasChicken tikka masalaFirecracker prawn curry or skinny chicken balti



My Recipe

Serves: 4
Syns: none
Healthy Extra:


  • 4 onions, peeled and thinly sliced
  • 2 small sweet potatoes, microwaved for 7 minutes
  • 1 egg
  • 1/2 tsp turmeric
  • 1/2 tsp cumin
  • 1/2 tsp chilli powder
  • 1/2 tsp salt
  • Low calorie cooking spray (I used Avocado Frylight)


  1. Preheat oven to 180c
  2. Fry the thinly sliced onion gently for about 10 minutes, until nice and soft. Remove from the heat and allow to cool for a few minutes
  3. Scoop the flesh out of the pre-cooked sweet potatoes, and mash with a fork.
  4. Add the egg and spices and salt to the sweet potato, and use a fork to combine thoroughly to make a batter
  5. Stir the cooled, fried onions into the sweet potato batter until thoroughly coated
  6. Line a baking tray with greaseproof paper, and use your hands to shape bhajis out of the mixture (I made 12 out of this mix)
  7. Spray the bhajis thoroughly with cooking spray, and bake for 45 minutes until golden and crispy.

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