In a large mixing bowl, blend the gram flour, baking powder, salt, cumin, and turmeric until well combined.

Stir in the green chillies, cilantro, lemon juice, and water. Mix until you have a thick, smooth batter.

Toss the thinly sliced onions into the bowl, ensuring they're fully coated with the batter.

In a large skillet over medium heat, add enough oil to create a 1-inch layer. Heat until shimmering.

Carefully spoon dollops of the batter-coated onions into the hot oil, frying about 3-4 bhajis at a time.

Cook each bhaji for about a minute on each side or until golden brown and crisp.

Using a slotted spoon, transfer the bhajis to a wire rack to drain excess oil.

Enjoy your crispy Onion Bhajis hot, either on their own or with a refreshing cucumber mint raita.