In another pan,heat oil or ghee for tempering.Add chopped onion,ginger,garlic,green chillies cook until the onion turns pink.
Add chopped tomatoes to this along with salt.Cook till tomatoes soften.
Add the boiled/blanched spinach and sarson
Mix well and let it cook in the open pan.Once it has soften,mash it with a hand masher or hand blender
Optionally, you may choose to add 2 tablespoon makai flour (unrefined corn flour) , this will help to thicken the mix.
Serve hot with makke ki roti, mango pickle,buttermilk.