Roast butternt squash, when mushy. Mash in a bowl with olive oil & lemon juice & S&P

Dry roast cumin seeds. = Cook cumin seeds in a Pan. (No oil) until dark brown. It will smell toasty. Smoosh into a powder & add into butternut squash mush. Put into puff pastry and seal (wet edges with milk or water)

Cook leeks In butter and oil. Then add flour and milk S&P. Then cover with water. Put a lid on it. If you want sauce thicker cook last part with lid off, high heat and stir often. (Optional grated cheese add at last 2 mins)