Take a pan and add oil/ghee to it. Once grated add garlic to it. A few seconds late add onions and green chilli to it. Once onions change their colour then add tomatoes and cook them till they turn soft. Then add mushroom to it. Add some water and cover tge pan with a lid. Mushrooms take time to cook so put the flame medium and let it simmer for 15 minutes. You can adjust their consistency to your wish.