Rinse the moong dal with water until water runs clear. Then soak the dal in two cups of water for 2-4 hours.
Drain the water completely and transfer the dal to a blender jar. Add chopped ginger, green chili, and 2-3 tablespoon cold water. Do not add too much water; the batter should be thick.
Blend everything into a smooth paste and transfer it into a bowl.
To this paste, add rice flour, yogurt, turmeric powder, red chili powder, and salt to taste. Whisk everything to form a thick batter.
Now take two ladlefuls of the batter into a separate bowl. Add 2 tablespoon green pepper, 2 tablespoon tomatoes, 2 tablespoon sweet corn, and 2 tablespoon coriander leaves. Mix well.
Heat a small frying pan and add a teaspoon of butter or oil. Once the pan is hot, add ½ teaspoon of fruit salt and a tablespoon of water to the prepared batter.
Mix the batter gently until it is light and frothy. Pour the batter onto the hot pan and spread it very lightly to make it even.
Top the Moonglet with carrot julienne and chopped coriander leaves. Cover the pan and panfry the Moonglet on low-medium heat for 3-4 minutes or until the bottom side is crispy and cooked well.
Flip over the Moonglet and gently make a slit in the center with a knife. Add a teaspoon of butter in the center and continue simmering for 2-3 minutes or until the other side is crispy and cooked well. Once it is done, remove it from the pan and transfer it to the plate.
Make the second Moonglet the same way with the remaining batter and vegetables.
Serve hot Moonglet with ketchup or a choice of chutney.