In a pan add 3 tsp of oil.
Add Urad dal, red chili and a pinch of asafoetida.
Saute till the urad dal turns golden brown.
Take this out from the pan.
Peel the skin of the onions and roughly chop the tomatoes.
I used small onions, if you are in a hurry go ahead with big onions. Use 1 big onion. But small onions gives a nice taste.
In the same pan, add 1 tsp of oil and add the small onions.
Cook till the onions gets cooked and turns slight golden brown colour.
Now add the tomatoes.
Cook till they turns mushy.
Switch off the flame.
Add the fresh coconut.
Mix well.
Take this out from the pan.
Allow this to cool completely.
Grind this into a fine paste along with the roasted urad dal and red chili.
Add salt while grinding.
Once done transfer to a serving bowl.
Add little water to adjust the consistency.
Temper mustard seeds and curry leaves in 1 tsp oil and add it to the chutney.
Mix well.
Onion tomato chutney is ready to serve.
Serve with idli | dosa. This chutney goes well with chapathi too.