Pressure cook or microwave the chayote squash with just enough water. Once done, drain excess water and mash well with a potato masher.

Heat ghee in a pan and fry the cashew till golden brown and drain from the pan and keep aside

In the same pan , roast the raisins till puffy and drain and keep aside

To this pan add the mashed chayote squash and cook for a minute.

Add sugar and milk and simmer for a few minutes.

Finally add the roasted nuts and raisins and remove from heat 

Serve warm / Chilled.