To use onion masala in this recipe, I suggest using ½ cup of onion masala in place of the onion, ginger, garlic, and tomatoes. After you heat the oil and green chili, add the spices, onion masala, and water and bring the pot to a simmer for a few minutes, until the sauce thickens (takes longer if starting with frozen masala). Add the eggs and you're done! The dish will look a bit different than what you see in these pictures, but it tastes great.