I found the quantity of ghee to be less. You can increase upto 1/4 cup to make the dessert richer.
I roasted the pumpkin in the oven. Cut by half, take off the seeds. Keep on a baking tin lined with foil face down. Bake in a 200 degree oven for 40-60 minutes till the skin looks wrinkled. Cool, then scoop off the puree. Use into the recipe. The only problem I found with this method is that a little of the awkward taste of the thick skin was present in the puree. I would still prefer boiling and straining over this.