- To make the bhaji (vegetable), heat butter in a pan and add cumin seeds. Once they splutter, add chopped onions, ginger, garlic, and green chilies. Cook until the onions turn translucent. 
- Add the chopped vegetables, salt, and all the spices. Mix well and cook until the vegetables are soft and fully cooked. 
- Mash the cooked vegetables with a potato masher or the back of a ladle. Add water if needed to adjust the consistency. 
- Heat a dosa tawa or griddle on medium heat. Once hot, spread a ladleful of dosa batter on the tawa and spread it evenly in a circular motion. 
- Drizzle oil around the edges and cook until the bottom turns golden brown. 
- Serve the dosa with generous portion of the prepared bhaji.