Steps
1. Heat oil in a pan and add cumin seeds and mustard seeds. Let them splutter.
2. Add the sliced onions and sauté until they turn golden brown.
3. Sprinkle turmeric powder, red chili powder, and salt. Mix well.
4. Toast the bread slices until they turn slightly crispy.
5. Spread the onion mixture evenly on one slice of bread and cover it with the other slice.
6. Cut the bread sandwich into desired shapes and garnish with fresh coriander leaves.
7. Serve hot as a delicious Indian main dish.