Pick and rinse masoor dal(orange lentils) few times in water. Add the rinsed lentils to a 2-liter stove top pressure cooker. Add required water and salt. Pressure cook for 2-3 whistles or until the lentils become soft and mushy.
While the lentils are cooking, prep the spinach. First rinse some tree spinach leaves thoroughly in water a few times. Drain all the water and set it aside. Now heat oil in a pan and splutter mustard seeds and add chopped garlic and dried red chilly.
Then add chopped shallots and saute until light brown in colour.
Now add chopped tomato and saute for 3-4 minutes. Add turmeric powder and saute for few seconds.
When the tomato becomes soft, add chopped tree spinach(chaya). Sauté the spinach for 4 to 5 minutes on low heat, stirring in between, till the spinach leaves soften and wilt.
Finally add cooked dal and combine well.
Add little water,The quantity of water will depend on how much thick or thin you want the consistency to be. Simmer the dal for 5 to 6 minutes. Stir often, so that the lentils do not stick to the bottom of the pan.
Serve hot with Chappati,rice etc.