In a kadhai heat mustard oil.when the oil is heated add fenugreek seeds and cumin seeds. Now add green chilli and ginger garlic paste.mix well. Add onions and cook for five minutes at medium flame. Add spices and tomato.give a nice mix. Now cook till five minutes. Now add pumpkin pieces. Cover it with lid. Keep gas flame on medium to low. Cook till pumpkin is cooked well. Serve hot with Puri and chapati.