Wash broccoli & potato in running water well. Then peel the skin off from potatoes with a peeler. Then chop them into equal size small cubes. Take florets from broccoli and keep it ready. Finely chop onions & garlic. In a pressure cooker, heat a tsp of butter and add garlic. Saute them for two minutes.
Now add onions. Fry them nicely until golden brown. Now add chopped potatoes and broccoli. Give a quick stir.
Pressure cook the broccoli, potatoes, garlic, and fried onions together with a cup of water for three whistles. Once the pressure is released, open the cooker, it will be soft and transparent.
Transfer the cooked ingredients to a blender. Grind it to a smooth paste.
Then heat the soup in a saucepan for two minutes. Add milk and bring it to a boil. Lastly, add required salt, pepper powder, and fresh cream/grated cheese. Mix well. Switch off the flame and serve warm.