Soak basil seeds in water for 15 minutes until they swell.
Cook falooda sev in boiling water for 5–7 minutes until soft, then drain and rinse.
In a saucepan, heat plant-based milk and add vegan condensed milk, sugar, and cardamom powder. Stir well and cook for 10 minutes on low heat.
Remove from heat and add rose water. Let it cool.
In serving glasses, layer falooda sev, soaked basil seeds, and the rabri mixture.
Top with mixed fruits and chopped nuts.
Serve chilled.