To begin making the Tomato Upma recipe, firstly, roast the sooji in a cast iron pan on medium flame and roast it till it slightly changes its colour. Keep it aside. 

Heat oil/ghee in a heavy bottomed pan. Add the mustard seeds, hing, red dry chilli and curry leaves. Allow it to splutter. 

Next, add the onions and green chillies and cook till the onion becomes soft and translucent.

Next, add the tomatoes and let it cook till the tomatoes becomes mushy and soft.

Add the spice powders including red chilli powder, turmeric powder, salt and lemon juice and cook it for about 3 to 5 minutes.

Next, add the sooji and the required water. Stir continuously to avoid lumps.

Cook for about 5 to 8 minutes. Once it is cooked properly, switch the flame and garnish with coriander leaves.

Serve Tomato Upma along with South Indian Coconut Chutney and Masala Chai for a weekday breakfast.