Make cashew and almond puree along with some water.
Soak saffron in some milk for 15 minutes.
Heat ghee in a pot and saute vermicelli for 1 minutes.
Add milk, water, sugar and let it simmer for 15 minutes.
Add cashew and almond puree, saffron soaked in milk and cardamom powder.
Let the kheer simmer for 10 minutes.
Notes
I have used pre roasted store bought vermicelli. I have sauted the vermicelli for 1 minute in ghee to coat it with ghee. If using regular vermicelli, roast it till it gets golden brown.Use of almond and cashew puree helps to thickens the kheer and also give it a rich taste. The kheer gets thick as it sits on the counter.