Add pumpkin seeds, sunflower seeds, cashews, almonds, dry-roasted peanuts, dry-roasted makhana, oats, and date to a bowl.
Add warm water and soak for 30 minutes.
Transfer everything, along with the soaking water, to a blender.
Add banana or apple if using and blend until smooth and creamy.
Add a little more water if needed to adjust the consistency and serve fresh.