Pressure cook moong dal until mushy. Crush pepper and jeera coarsely,slit the green chillis. Heat a pan with ghee/oil and temper with the items given in order under medium flame.Add water,turmeric and salt and bring to boil. Add the cooked dal and oats and mix well. Cook until you get a porridge consistency. Cook covered in low flame for 2-3 minutes or until you get your desired consistency.